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中心三角形n。  令人厌恶的。

属于这两组的第一个数字:

1,4,19,31,64,109,199,274,316,361,409,460,631,829,901,976,1054,1135,1219,1306,1585,1684,1891,1999,2341,2461,2839,3385,3529,3676,4135,4294,4456,4621,4789,4960,5134,5311,5860,6049,6241,6436,7039,7246,7456,7885,8551,9244,9481,9721,10711,11485,11749,12559,13969,14260,15454,15760,16069,16381,16696,17014,17335,17659,17986,18316,18649,19324,19666,20359,20710,21064,21421,21781,22144,22510,23251,23626,24769,25156,26335,27541,27949,28774,29191,30460,31321,31756,32194,32635,33079,34429,34885,37210,37684,38641,39124,39610,42085,42589,44119,46201,47794,49414,52735,53299,54436,55009,55585,56164,57331,59701,61510,62731,63346,63964,64585,65836,67099,67735,68374,69016,70309,71614,72271,72931,73594,74260,74929,76276,77635,78319,79006,80389,81085,81784,82486,83899,86761,88210,88939,90406,91144,91885,93376,94879,97156,97921,98689,99460,101791,103360,104941,105736,107335,111385,112204,114679,115510,116344,117181,119710,120559,121411,122266,123124,124849,125716,127459,130096,130981,131869,134551,135451,139081,141835,143686,146485,149311,151210,152164,153121,154081,155044,156979,161869,166834,169849,173911,176989,178021,183226,184276,185329,186385,187444,190639,192784,194941,197110,198199,201484,204796,205906,207019,208135,209254,210376,212629,213760,214894,216031,218314,221761,222916,225235,228736,229909,234631,237010,243010,246646,249085,251536,252766,255235,258961,260209,263971,265231,266494,269029,271576,272854,274135,275419,277996,279289,280585,283186,287110,289741,292384,293710,295039,296371,297706,299044,303076,308494,311221,315334,319474,323641,325036,327835,330646,336304,337726,339151,340579,342010,355024,359416,360886,363835,365314,366796,368281,369769,372754,374251,375751,377254,378760,381781,384814,387859,389386,393985.

一些较大的示例: