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 A085646 #4 Jul 14 2020 23:49:07 %S A085646 1,5,24,52,120,120,336,496,654,600,1320,1248,2184,1680,2880 %N A085646 Sum of the entries in the character table of the group GL(2,Z_n). %F A085646 For an odd prime p : a(p) = p*(p^2-1). %Y A085646 Cf. A000252, A062354, A053191. %K A085646 mult,nonn,more %O A085646 1,2 %A A085646 Yuval Dekel (dekelyuval(AT)hotmail.com), Jul 11 2003