This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A299172 #18 Feb 17 2018 11:08:13 %S A299172 2,3,59,107 %N A299172 Primes p such that Ramanujan number tau(p) is divisible by p-1. %C A299172 a(5) > 10^7. %t A299172 Select[ Prime@ Range@ 30, Mod[ RamanujanTau@#, # - 1] == 0 &] (* _Robert G. Wilson v_, Feb 11 2018 *) %o A299172 (PARI) isok(p) = isprime(p) && !(ramanujantau(p) % (p-1)); \\ _Michel Marcus_, Feb 05 2018 %Y A299172 Cf. A000594, A007659, A299171, A299204, A299205. %K A299172 nonn,more %O A299172 1,1 %A A299172 _Seiichi Manyama_, Feb 04 2018