23/02/04 09:39:57.61 Zzz+Qnvw.net
>>405
追加 n*(n+1)*(n+2)としたときのn
1億以下だと
[1] 61 161 261 361 461 561 661 761 861 961 1061 1161
[13] 1261 1361 1461 1561 1661 1761 1861 1961
...
[1] 99998061 99998161 99998261 99998361 99998461 99998561 99998661
[8] 99998761 99998861 99998961 99999061 99999161 99999261 99999361
[15] 99999461 99999561 99999661 99999761 99999861 99999961