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 A111326 #8 May 14 2024 03:58:39
%S A111326 97,99,103,105,107,111,119,121,125,129,161,163,169,175,177,179,185,
%T A111326 195,199,203,205,207,211,213,233,235,237,273,305,307,309,311,329,335,
%U A111326 337,343,345,347,353,357,421,423,425,439,443,445,447,449,455,463,511,513,515,539
%N A111326 Numbers k such that 12 divides prime(1) + ... + prime(k).
%H A111326 Amiram Eldar, <a href="/A111326/b111326.txt">Table of n, a(n) for n = 1..10000</a>
%t A111326 Position[Accumulate[Prime[Range[400]]], _?(Divisible[#, 12] &)] // Flatten (* _Amiram Eldar_, May 14 2024 *)
%o A111326 (PARI) lista(pmax) = {my(s = 0, k = 0); forprime(p = 2, pmax, k++; s += p; if(!(s % 12), print1(k, ", ")));} \\ _Amiram Eldar_, May 14 2024
%Y A111326 Cf. A007504, A103208, A111318, A111319, A111320, A111321, A111322, A111323, A111324, A111325, A111327.
%K A111326 nonn
%O A111326 1,1
%A A111326 _N. J. A. Sloane_, Nov 05 2005