# Greetings from The On-Line Encyclopedia of Integer Sequences! http://oeis.org/ Search: id:a299205 Showing 1-1 of 1 %I A299205 #22 Mar 24 2020 11:14:04 %S A299205 2,3,10,14,15,56,57,59,70,85,105,107,116,136,209,267,295,323,352,393, %T A299205 415,442,530,551,645,646,760,855,1197,1288,1342,1415,1472,1496,1625, %U A299205 1765,1953,2002,2255,2485,2847,2945,3039,3382,3591,3745,3905,4233,4264,4313 %N A299205 Numbers k such that k-1 divides tau(k), where tau(k)=A000594(k) is Ramanujan's tau function. %C A299205 Numbers k such that A299204(k) = 0. %H A299205 Seiichi Manyama, Table of n, a(n) for n = 1..500 %H A299205 Eric Weisstein's World of Mathematics, Tau Function %o A299205 (PARI) isok(n) = (ramanujantau(n) % (n-1)) == 0; \\ _Michel Marcus_, Feb 05 2018 %Y A299205 For the sequence when n is prime see A299172. %Y A299205 Cf. A000594, A063938, A299157, A299204. %K A299205 nonn %O A299205 1,1 %A A299205 _Seiichi Manyama_, Feb 05 2018 # Content is available under The OEIS End-User License Agreement: http://oeis.org/LICENSE