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 A218946 #10 Apr 15 2013 06:45:42 %S A218946 1,1,1,1,3,4,5,6,10,12,14,17,24 %N A218946 Number of maximal solvable conjugacy classes of subgroups of the alternating group. %H A218946 Liam Naughton and Goetz Pfeiffer, <a href="http://arxiv.org/abs/1211.1911">Integer sequences realized by the subgroup pattern of the symmetric group</a>, arXiv:1211.1911 %H A218946 Liam Naughton, <a href="http://www.maths.nuigalway.ie/~liam/CountingSubgroups.g">CountingSubgroups.g</a> %H A218946 Liam Naughton and Goetz Pfeiffer, <a href="http://schmidt.nuigalway.ie/tomlib/">Tomlib, The GAP table of marks library</a> %K A218946 nonn,more %O A218946 0,5 %A A218946 _Liam Naughton_, Nov 23 2012