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 A292337 #7 Aug 26 2021 08:29:35 %S A292337 1,13,1027,468481,2890927,37009999,228383233,2126334691,104180336299, %T A292337 8230246567621,34238014256797,76626723259567,131147819778859, %U A292337 219609509027857,472852182249889,1033753383066391,2704803126286963,10360677762529861,16436880348770011,17349151213200703,81666517262244889,686779630199762359 %N A292337 Numbers k such that k^2 divides 12^k + 1. %H A292337 Max Alekseyev, <a href="/A292337/b292337.txt">Table of n, a(n) for n = 1..29</a> %Y A292337 Subsequence of A015961. %Y A292337 Cf. A128405, A128685. %K A292337 nonn %O A292337 1,2 %A A292337 _Max Alekseyev_, Sep 16 2017