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A299205
Numbers k such that k-1 divides tau(k), where tau(k)=A000594(k) is Ramanujan's tau function.
3
2, 3, 10, 14, 15, 56, 57, 59, 70, 85, 105, 107, 116, 136, 209, 267, 295, 323, 352, 393, 415, 442, 530, 551, 645, 646, 760, 855, 1197, 1288, 1342, 1415, 1472, 1496, 1625, 1765, 1953, 2002, 2255, 2485, 2847, 2945, 3039, 3382, 3591, 3745, 3905, 4233, 4264, 4313
OFFSET
1,1
COMMENTS
Numbers k such that A299204(k) = 0.
LINKS
Eric Weisstein's World of Mathematics, Tau Function
PROG
(PARI) isok(n) = (ramanujantau(n) % (n-1)) == 0; \\ Michel Marcus, Feb 05 2018
CROSSREFS
For the sequence when n is prime see A299172.
Sequence in context: A267008 A129315 A171126 * A268878 A194544 A348475
KEYWORD
nonn
AUTHOR
Seiichi Manyama, Feb 05 2018
STATUS
approved