## ETC Crossdifferences.

#### Last update: 2012/02/09.

##### 4965 points sampled.
The appearance of {j, k} after a triangle centre X(n) means that X(n) is the Crossdifference of evey pair of points on line {j, k}.

Centre  Line
X(1){44,513}
X(2){187,237}
X(3){230,231}
X(4){520,647}
X(5){50,647}
X(6){30,511}
X(7){657,663}
X(8){649,854}
X(9){513,663}
X(10){649,834}
X(11){101,109}
X(12){654,4282}
X(15){395,523}
X(16){396,523}
X(19){521,656}
X(20){647,657}
X(21){647,661}
X(22){647,826}
X(23){39,647}
X(25){441,525}
X(27){647,810}
X(28){647,656}
X(29){647,822}
X(30){6,647}
X(31){514,661}
X(32){325,523}
X(33){652,905}
X(34){521,652}
X(35){650,4802}
X(36){37,650}
X(37){36,238}
X(38){661,830}
X(39){23,385}
X(40){650,1459}
X(41){522,693}
X(42){239,514}
X(43){649,4083}
X(44){1,513}
X(45){513,1960}
X(46){650,2605}
X(47){661,2618}
X(48){240,522}
X(49){2081,2501}
X(50){5,523}
X(51){323,401}
X(52){523,2623}
X(54){2081,2600}
X(55){241,514}
X(56){522,650}
X(57){650,663}
X(58){523,661}
X(60){2610,4024}
X(63){661,663}
X(65){521,650}
X(69){512,1692}
X(71){242,514}
X(72){513,1430}
X(73){243,522}
X(74){1636,1637}
X(75){667,788}
X(76){669,688}
X(77){657,4041}
X(78){649,4017}
X(81){512,661}
X(82){2084,2530}
X(83){688,3005}
X(86){512,798}
X(88){678,1635}
X(89){4770,4775}
X(92){810,822}
X(98){684,2491}
X(99){351,865}
X(100){244,665}
X(101){11,244}
X(104){1769,3310}
X(105){665,1642}
X(106){900,1635}
X(107){1636,2972}
X(109){11,1146}
X(110){115,125}
X(111){351,690}
X(112){122,125}
X(113){526,686}
X(114){248,2422}
X(115){110,351}
X(119){654,2423}
X(120){665,2440}
X(122){112,1301}
X(123){1415,2443}
X(124){2425,4559}
X(125){110,112}
X(126){351,2444}
X(127){1576,2445}
X(132){248,684}
X(133){1636,2430}
X(141){512,1691}
X(154){525,3239}
X(155){924,2501}
X(157){2485,2799}
X(158){680,822}
X(159){525,2485}
X(162){2631,2632}
X(163){1109,2632}
X(165){650,4449}
X(169){1459,2254}
X(171){650,3250}
X(172){522,1491}
X(181){3904,3910}
X(182){523,3569}
X(183){512,2021}
X(184){297,525}
X(185){450,2451}
X(186){216,647}
X(187){2,523}
X(190){1015,1960}
X(191){661,2605}
X(193){512,1570}
X(194){669,2451}
X(197){905,3910}
X(198){522,905}
X(200){649,3669}
X(210){1019,1429}
X(211){850,3050}
X(212){514,3064}
X(213){320,350}
X(214){1635,1769}
X(216){186,523}
X(217){340,520}
X(219){513,1835}
X(220){513,676}
X(221){521,3239}
X(222){3064,3700}
X(223){652,3900}
X(226){652,663}
X(228){693,905}
X(230){3,512}
X(231){3,1510}
X(232){3,525}
X(233){1157,1510}
X(237){2,647}
X(238){37,513}
X(239){42,649}
X(240){48,656}
X(241){55,650}
X(242){71,1459}
X(243){73,652}
X(244){100,101}
X(245){110,2610}
X(246){110,1637}
X(247){110,686}
X(248){114,132}
X(251){826,2474}
X(255){661,3064}
X(256){3287,3805}
X(265){526,2081}
X(269){657,3900}
X(274){669,798}
X(278){652,1946}
X(279){657,4105}
X(281){1459,1946}
X(283){661,2501}
X(284){523,656}
X(286){810,3049}
X(291){659,4435}
X(292){659,812}
X(294){926,1362}
X(295){4010,4435}
X(297){184,647}
X(308){688,2531}
X(310){669,1924}
X(314){798,3049}
X(315){3005,3049}
X(316){3049,3051}
X(319){3063,4834}
X(320){213,3063}
X(321){667,838}
X(323){51,512}
X(325){32,512}
X(332){798,2489}
X(333){512,810}
X(339){1576,2491}
X(340){217,3049}
X(343){512,2623}
X(347){657,1946}
X(350){213,667}
X(351){2,99}
X(352){373,512}
X(354){650,1734}
X(373){352,1499}
X(377){647,3063}
X(379){647,926}
X(380){656,3669}
X(381){526,647}
X(384){647,3221}
X(385){39,512}
X(386){523,649}
X(387){520,649}
X(388){652,3063}
X(390){657,665}
X(393){520,4091}
X(394){460,512}
X(395){15,512}
X(396){16,512}
X(399){526,1637}
X(401){51,647}
X(403){577,647}
X(404){647,1635}
X(405){513,647}
X(419){647,3917}
X(424){647,1437}
X(441){25,647}
X(442){647,2605}
X(450){185,647}
X(460){394,647}
X(468){3,647}
X(474){647,4132}
X(484){650,1100}
X(497){652,665}
X(511){6,523}
X(512){2,6}
X(513){1,6}
X(514){6,31}
X(515){6,652}
X(516){6,657}
X(517){6,650}
X(518){6,513}
X(519){6,649}
X(520){4,6}
X(521){6,19}
X(522){6,41}
X(523){3,6}
X(524){6,512}
X(525){6,25}
X(526){6,13}
X(527){6,663}
X(528){6,665}
X(536){6,667}
X(537){6,3768}
X(538){6,669}
X(542){6,526}
X(543){6,351}
X(545){6,1960}
X(551){649,4491}
X(560){824,1577}
X(561){1924,1980}
X(567){523,2081}
X(570){523,2070}
X(571){523,2072}
X(572){523,1769}
X(573){523,1459}
X(574){351,523}
X(577){403,523}
X(579){523,663}
X(581){523,652}
X(583){523,4040}
X(584){523,1734}
X(590){512,2459}
X(593){4024,4705}
X(595){661,1639}
X(599){512,2030}
X(603){3064,3239}
X(604){522,3717}
X(607){521,4025}
X(609){1491,4728}
X(610){656,3900}
X(612){649,905}
X(614){649,3309}
X(615){512,2460}
X(620){351,2872}
X(625){1613,3050}
X(626){3005,3050}
X(644){244,1357}
X(645){1356,3122}
X(647){2,3}
X(649){1,2}
X(650){1,3}
X(651){926,2170}
X(652){1,4}
X(653){2637,2638}
X(654){1,5}
X(656){1,19}
X(657){1,7}
X(659){1,39}
X(661){1,21}
X(662){2642,2643}
X(663){2,7}
X(665){2,11}
X(667){2,37}
X(668){890,1977}
X(669){2,39}
X(670){887,1084}
X(672){1,514}
X(673){665,926}
X(674){6,514}
X(676){3,101}
X(678){88,1022}
X(680){6,158}
X(682){2489,3267}
X(684){4,32}
X(686){4,110}
X(688){6,76}
X(690){6,110}
X(691){1648,1649}
X(692){918,1086}
X(693){31,32}
X(694){804,4107}
X(698){6,3221}
X(712){6,1980}
X(714){6,1924}
X(726){6,1919}
X(732){6,688}
X(738){4105,4130}
X(739){891,4728}
X(740){6,798}
X(741){4010,4839}
X(742){6,788}
X(744){6,2084}
X(750){1635,3250}
X(752){6,3250}
X(754){6,3005}
X(756){1019,3960}
X(757){4079,4155}
X(758){6,661}
X(760){6,1491}
X(764){44,765}
X(765){764,2087}
X(766){6,693}
X(770){1,1092}
X(784){6,2205}
X(786){6,1923}
X(788){6,75}
X(798){1,75}
X(799){3121,4117}
X(800){523,2071}
X(804){6,694}
X(810){19,27}
X(812){6,292}
X(813){4124,4448}
X(816){6,2085}
X(822){1,29}
X(824){6,560}
X(826){6,22}
X(830){6,38}
X(832){6,977}
X(834){6,10}
X(838){6,321}
X(840){1642,1643}
X(846){661,4367}
X(849){4024,4036}
X(850){32,184}
X(851){1,647}
X(852){4,647}
X(853){7,647}
X(854){8,647}
X(855){9,647}
X(856){19,647}
X(857){31,647}
X(858){32,647}
X(859){37,647}
X(860){48,647}
X(861){57,647}
X(862){63,647}
X(863){75,647}
X(864){76,647}
X(865){99,647}
X(866){100,647}
X(867){101,647}
X(868){110,647}
X(869){649,693}
X(872){812,1019}
X(874){798,1084}
X(875){239,350}
X(876){238,1914}
X(878){232,297}
X(879){232,511}
X(880){688,1084}
X(881){385,3978}
X(882){385,732}
X(883){3063,3271}
X(884){241,3693}
X(885){672,1362}
X(887){2,670}
X(888){6,99}
X(890){2,668}
X(891){6,100}
X(893){2533,3907}
X(894){663,788}
X(896){1,661}
X(899){1,649}
X(900){6,101}
X(901){1647,2087}
X(902){2,514}
X(903){1017,1960}
X(904){4369,4374}
X(905){19,25}
X(906){11,2969}
X(908){31,663}
X(909){1145,1769}
X(910){1,905}
X(912){6,3657}
X(918){6,692}
X(919){3126,3675}
X(922){75,1577}
X(923){2642,4750}
X(924){5,6}
X(926){6,7}
X(928){6,11}
X(934){2310,3119}
X(940){512,650}
X(944){652,3310}
X(948){652,926}
X(952){6,654}
X(956){513,3310}
X(966){512,1459}
X(968){661,905}
X(980){650,669}
X(983){3777,3808}
X(984){513,1919}
X(985){1491,3250}
X(986){650,1919}
X(991){523,657}
X(993){661,1769}
X(995){649,900}
X(997){649,1769}
X(999){650,900}
X(1001){513,665}
X(1003){647,888}
X(1006){647,1769}
X(1009){647,659}
X(1010){647,798}
X(1011){514,647}
X(1014){3709,4041}
X(1015){100,190}
X(1017){900,903}
X(1018){244,659}
X(1019){37,42}
X(1020){1984,2310}
X(1021){42,65}
X(1022){44,678}
X(1023){244,513}
X(1024){241,518}
X(1025){663,2170}
X(1026){244,649}
X(1027){518,672}
X(1042){657,1021}
X(1045){798,4367}
X(1054){1635,3722}
X(1055){2,522}
X(1078){2491,3005}
X(1083){513,3290}
X(1084){99,670}
X(1086){101,692}
X(1092){770,2501}
X(1096){822,4091}
X(1099){2159,2624}
X(1100){484,513}
X(1106){3239,4171}
X(1107){513,3510}
X(1108){513,2077}
X(1109){163,1983}
X(1111){692,2874}
X(1122){3063,4130}
X(1125){649,4057}
X(1145){909,2423}
X(1146){109,692}
X(1147){686,2501}
X(1149){9,649}
X(1150){512,3310}
X(1154){6,2623}
X(1155){1,650}
X(1172){520,656}
X(1178){804,2533}
X(1180){669,826}
X(1181){520,2501}
X(1184){512,3265}
X(1185){512,693}
X(1186){688,850}
X(1190){3676,3900}
X(1191){513,2529}
X(1193){522,649}
X(1194){525,669}
X(1196){669,3265}
X(1197){693,2533}
X(1200){3676,4105}
X(1201){649,3239}
X(1202){514,4105}
X(1203){513,4024}
X(1204){1636,2501}
X(1209){1510,2623}
X(1212){513,2078}
X(1213){512,1326}
X(1214){650,1946}
X(1216){2501,3050}
X(1236){1501,3049}
X(1252){764,1647}
X(1266){41,1919}
X(1279){9,513}
X(1282){2254,4435}
X(1284){9,3287}
X(1293){3756,4534}
X(1301){122,1562}
X(1316){511,647}
X(1317){654,2316}
X(1319){9,650}
X(1323){55,657}
X(1325){647,2092}
X(1326){523,1213}
X(1331){2170,2969}
X(1332){3125,3271}
X(1333){523,1577}
X(1334){1443,1447}
X(1344){647,2575}
X(1345){647,2574}
X(1352){924,2485}
X(1356){645,4631}
X(1357){644,1639}
X(1362){294,885}
X(1364){1783,4559}
X(1375){55,647}
X(1376){665,4083}
X(1383){3906,4141}
X(1387){654,3196}
X(1397){3700,3910}
X(1400){522,663}
X(1401){3700,4435}
X(1402){650,3975}
X(1403){650,3907}
X(1404){8,522}
X(1405){522,3904}
X(1407){3239,3900}
X(1408){3700,4086}
X(1409){521,1948}
X(1411){654,3738}
X(1412){3700,4041}
X(1415){11,123}
X(1417){1639,4768}
X(1423){663,3287}
X(1427){1021,3900}
X(1428){522,2321}
X(1429){210,650}
X(1431){3287,3907}
X(1432){3287,4477}
X(1434){3709,4524}
X(1437){424,2501}
X(1438){918,2254}
X(1441){1946,3063}
X(1443){657,1334}
X(1444){2489,3709}
X(1447){663,1334}
X(1449){513,4041}
X(1455){9,2432}
X(1456){9,521}
X(1457){9,652}
X(1458){9,522}
X(1459){4,9}
X(1460){650,3910}
X(1461){1146,2310}
X(1463){9,3063}
X(1464){9,1021}
X(1465){55,1946}
X(1468){522,661}
X(1469){522,3063}
X(1470){650,2804}
X(1471){522,4171}
X(1474){525,656}
X(1475){522,3935}
X(1486){905,918}
X(1491){1,32}
X(1495){2,525}
X(1499){6,373}
X(1500){659,3004}
X(1501){826,850}
X(1503){6,520}
X(1506){1510,3005}
X(1510){6,17}
X(1511){1637,1989}
X(1512){1459,2423}
X(1513){647,2422}
X(1514){520,2433}
X(1515){520,2430}
X(1519){652,2423}
X(1521){2424,2432}
X(1528){652,2431}
X(1529){647,2435}
X(1531){2433,3049}
X(1532){647,2423}
X(1536){647,2424}
X(1541){652,2424}
X(1542){1459,2432}
X(1544){1459,2433}
X(1547){520,2424}
X(1548){520,2423}
X(1549){520,2432}
X(1553){2433,2436}
X(1554){2433,2435}
X(1558){652,2433}
X(1559){647,2430}
X(1561){684,2433}
X(1562){110,1301}
X(1565){2426,4557}
X(1566){2283,2424}
X(1568){2433,2623}
X(1570){193,523}
X(1573){890,4784}
X(1575){1,667}
X(1576){115,127}
X(1577){31,48}
X(1580){38,661}
X(1613){512,625}
X(1616){513,2490}
X(1621){661,665}
X(1624){115,122}
X(1625){125,526}
X(1634){115,804}
X(1635){1,88}
X(1636){4,74}
X(1637){3,74}
X(1638){55,101}
X(1639){56,106}
X(1640){23,110}
X(1641){111,512}
X(1642){105,513}
X(1643){100,518}
X(1644){106,649}
X(1645){99,669}
X(1646){100,667}
X(1647){101,649}
X(1648){110,249}
X(1649){23,111}
X(1650){112,647}
X(1651){74,647}
X(1656){647,1510}
X(1691){141,523}
X(1692){69,523}
X(1696){905,3667}
X(1698){649,2605}
X(1706){1459,4394}
X(1707){661,4449}
X(1716){2484,4367}
X(1725){48,661}
X(1733){48,798}
X(1734){48,354}
X(1735){48,650}
X(1736){48,513}
X(1737){48,649}
X(1738){48,1919}
X(1739){48,4394}
X(1740){798,4083}
X(1742){657,4449}
X(1743){513,4162}
X(1755){1,810}
X(1756){37,2605}
X(1757){513,1100}
X(1758){650,2646}
X(1759){1491,2605}
X(1761){810,2605}
X(1763){2522,3900}
X(1769){9,48}
X(1772){48,1635}
X(1781){656,2605}
X(1783){1364,3270}
X(1784){48,822}
X(1785){48,652}
X(1790){2501,4024}
X(1797){4120,4895}
X(1817){647,4041}
X(1818){19,1024}
X(1819){2501,4017}
X(1824){905,4131}
X(1826){1459,4091}
X(1829){521,2522}
X(1834){520,3733}
X(1843){525,3049}
X(1861){48,1459}
X(1870){71,652}
X(1876){219,521}
X(1877){219,652}
X(1880){521,1946}
X(1884){219,647}
X(1886){3,4091}
X(1901){520,2605}
X(1911){812,3766}
X(1912){6,350}
X(1914){10,514}
X(1915){525,4486}
X(1918){514,1921}
X(1919){10,75}
X(1921){1918,1919}
X(1922){3766,4010}
X(1923){661,786}
X(1924){38,75}
X(1926){1923,1924}
X(1930){798,1933}
X(1931){661,1962}
X(1933){1577,1930}
X(1936){65,650}
X(1938){6,1936}
X(1944){663,1400}
X(1946){2,92}
X(1948){1409,1946}
X(1951){226,522}
X(1953){656,1955}
X(1955){656,1953}
X(1959){31,661}
X(1960){2,45}
X(1962){661,1019}
X(1964){798,812}
X(1966){798,1964}
X(1971){5,525}
X(1973){656,4025}
X(1974){525,3267}
X(1975){2491,3221}
X(1976){2799,3569}
X(1977){668,891}
X(1979){891,4928}
X(1980){76,321}
X(1981){647,3270}
X(1983){11,523}
X(1984){647,1020}
X(1985){647,928}
X(1989){526,1511}
X(1990){3,520}
X(1995){647,690}
X(2003){3900,4820}
X(2021){183,523}
X(2030){523,599}
X(2049){647,834}
X(2070){570,647}
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X(4394){1,474}
X(4397){32,604}
X(4401){2276,3720}
X(4414){4160,4893}
X(4421){665,2516}
X(4423){665,3803}
X(4427){1015,3124}
X(4429){665,1919}
X(4432){292,3572}
X(4435){43,57}
X(4436){1015,1084}
X(4444){1914,2210}
X(4447){893,1024}
X(4448){106,292}
X(4449){43,165}
X(4453){41,1017}
X(4455){37,86}
X(4458){41,2276}
X(4465){292,875}
X(4466){101,112}
X(4468){31,1475}
X(4471){824,3960}
X(4475){100,825}
X(4477){57,893}
X(4481){37,1918}
X(4486){31,292}
X(4490){1449,1914}
X(4491){37,537}
X(4498){42,1449}
X(4501){749,1469}
X(4502){238,1468}
X(4507){239,940}
X(4509){41,560}
X(4511){649,1400}
X(4512){661,3669}
X(4516){651,662}
X(4517){3676,4817}
X(4521){56,1149}
X(4524){81,279}
X(4526){56,651}
X(4528){1407,1461}
X(4529){56,904}
X(4530){59,109}
X(4534){109,1293}
X(4543){1404,2226}
X(4551){654,2170}
X(4553){3125,4164}
X(4556){115,2643}
X(4557){812,1015}
X(4558){115,2971}
X(4559){11,124}
X(4560){42,181}
X(4563){2971,3124}
X(4565){4092,4516}
X(4574){1086,2969}
X(4575){1109,3708}
X(4578){1015,3020}
X(4579){2170,3123}
X(4580){39,1843}
X(4581){1193,1682}
X(4585){512,2643}
X(4587){244,2969}
X(4617){3022,3119}
X(4636){115,1365}
X(4641){4162,4775}
X(4642){1021,1635}
X(4644){926,4775}
X(4645){2300,3063}
X(4646){1021,3733}
X(4657){667,2483}
X(4663){513,4501}
X(4664){667,3768}
X(4670){4455,4775}
X(4689){650,4378}
X(4694){650,3217}
X(4700){834,2334}
X(4705){81,593}
X(4707){42,692}
X(4712){1027,1438}
X(4713){1912,1960}
X(4715){6,4775}
X(4724){1,672}
X(4725){6,4834}
X(4728){31,101}
X(4729){81,2999}
X(4730){81,88}
X(4733){3733,4832}
X(4750){42,101}
X(4761){2280,4273}
X(4762){6,2223}
X(4765){42,56}
X(4766){31,3250}
X(4768){604,1415}
X(4770){81,89}
X(4773){106,386}
X(4774){893,2364}
X(4775){2,44}
X(4776){31,2242}
X(4777){6,36}
X(4778){6,1334}
X(4782){1,1575}
X(4784){1,1573}
X(4785){6,3009}
X(4789){31,187}
X(4790){1,210}
X(4794){45,672}
X(4800){292,2163}
X(4802){6,35}
X(4804){41,58}
X(4806){58,2176}
X(4809){101,753}
X(4811){213,604}
X(4813){1,2308}
X(4814){57,89}
X(4815){41,1333}
X(4817){869,2276}
X(4820){56,1203}
X(4822){9,81}
X(4823){31,2174}
X(4824){58,1914}
X(4825){89,4850}
X(4826){86,3624}
X(4827){65,269}
X(4828){1918,2251}
X(4830){292,2334}
X(4832){8,86}
X(4833){37,758}
X(4834){2,319}
X(4840){37,3678}
X(4841){55,58}
X(4843){6,1412}
X(4845){1638,3321}
X(4850){667,1635}
X(4851){2483,4834}
X(4858){692,1415}
X(4860){650,3887}
X(4864){513,1743}
X(4868){1635,3733}
X(4871){649,2176}
X(4874){3,2176}
X(4876){659,3808}
X(4879){1743,2238}
X(4885){2176,2223}
X(4893){1,89}
X(4895){57,88}
X(4904){692,2428}
X(4905){37,2280}
X(4908){667,2163}
X(4922){893,2316}
X(4925){1438,3207}
X(4927){32,1017}
X(4928){1979,2176}
X(4931){58,2163}
X(4932){42,2176}
X(4944){56,2163}
X(4948){187,2163}
X(4957){692,1983}
X(4958){106,1468}
To ETC

Compiled by Peter J C Moses.