A014861 Numbers k that divide s(k), where s(1)=1, s(j)=13*s(j-1)+j.

1, 3, 9, 13, 27, 39, 81, 117, 183, 243, 351, 549, 689, 729, 1053, 1647, 2067, 2187, 2379, 3081, 3159, 4941, 6201, 6561, 7137, 9243, 9477, 11163, 14823, 18603, 19683, 21411, 27729, 28431, 33489, 36517, 42627, 44469, 55809, 59049, 64233, 67161, 73723, 83187, 85293

Offset: 1

Author

N. J. A. Sloane, Olivier Gérard

Keywords

• nonn

Crossrefs

s(n) = A014896(n).

Programs

PARI

lista(nn) = my(s); for(k=1, nn, s=13*s+k; if(s%k==0, print1(k, ", "))); \\ Jinyuan Wang, Aug 08 2021

Extensions

More terms from Jinyuan Wang, Aug 08 2021