Least k such that n^k mod k = (n-1)^2, or 0 if no such k exists.

Terms

a(0) =0a(1) =41459a(2) =35a(3) =9569200211a(4) =2673413a(5) =10596486211a(7) =235a(8) =12722173a(9) =1971782729a(10) =133617287a(11) =14873a(12) =1465a(13) =1606870609a(14) =4247a(16) =526673a(17) =835a(18) =1079115301a(19) =12148589879a(20) =12351683a(21) =36947690849a(22) =6385a(23) =5809