搜索号码
二项式系数  有害的。

属于这两组的第一个数字:

6,10,20,21,28,35,36,55,56,66,70,84,91,136,171,220,253,276,286,351,364,406,465,496,528,560,595,666,820,861,1001,1081,1140,1225,1287,1330,1378,1431,1485,1540,1653,1770,1891,2002,2024,2080,2211,2300,2346,2380,2485,2850,3160,3240,3403,3655,3916,4186,4368,4371,4495,4560,4753,4950,4960,5005,5151,5253,5356,5456,5671,5985,6188,6786,7260,7315,7750,8001,8008,8128,8256,8515,8778,8855,9045,9316,9870,10296,10440,10585,10626,11476,11480,12376,12403,12561,12650,12880,13366,13695,13861,14365,16110,16215,16653,16836,17020,17205,17296,17766,18145,18721,19110,19600,20349,20825,21321,21528,21736,22100,22791,23426,23871,24310,24531,24976,25425,25651,25878,26335,26796,27028,27730,29260,29890,30135,31824,32509,32896,33411,33649,33930,34220,34453,34980,35778,35960,35990,38226,38781,41041,41616,41664,42504,43660,46360,46376,48620,48828,49141,49770,50116,50388,51040,51360,53301,53956,54285,56953,60378,61776,62481,62835,63190,64980,65341,67161,67528,68265,68635,70300,70500,71631,72010,72771,73150,73536,73815,74305,75078,76076,77815,80200,81406,82215,82251,85320,85491,86736,87990,88831,91390,92665,95266,96141,97461,97903,98346,98770,99681,101025,102378,104196,109278,111628,112101,113564,114003,114481,114960,117855,118828,119316,119805,120786,122265,123410,124251,124750,126253,128271,131328,132355,133386,134421,134596,135460,135751,137026,139656,141246,142311,143380,143916,144453,144991,147440,148240,148785,151525,152096,152628,154846,161028,161596,162165,162735,163185,163878,164451,165600,166176,167910,167960,168490,170544,171991,173755,174345,176121,177906,178365,184528,186355,187578,188191,189420,190653,191271,193131.

一些较大的示例: