A299157 - OEIS

A299157

Numbers k such that k+1 divides tau(k), where tau(k)=A000594(k) is Ramanujan's tau function.

2, 3, 5, 6, 7, 11, 13, 17, 19, 20, 22, 23, 27, 29, 31, 41, 45, 47, 53, 55, 59, 68, 71, 76, 77, 79, 83, 87, 89, 91, 97, 104, 107, 114, 127, 137, 139, 149, 160, 167, 171, 177, 179, 183, 191, 195, 199, 209, 223, 229, 239, 240, 243, 251, 269, 275, 293, 297, 321, 343

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Numbers k such that A299163(k) = 0.

LINKS

Seiichi Manyama, Table of n, a(n) for n = 1..500

Eric Weisstein's World of Mathematics, Tau Function

PROG

(PARI) isok(n) = (ramanujantau(n) % (n+1)) == 0; \\ Michel Marcus, Feb 05 2018

CROSSREFS

Cf. A000594, A063938, A079334, A296991, A299158, A299163.