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 A218945 #10 Apr 15 2013 06:46:04 %S A218945 1,1,2,9,53,418,2894,33675,369763,4769542,58853842,139505110, %T A218945 21847262156 %N A218945 Total number of supersolvable subgroups of the alternating group, counting conjugates as distinct. %H A218945 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 A218945 Liam Naughton, <a href="http://www.maths.nuigalway.ie/~liam/CountingSubgroups.g">CountingSubgroups.g</a> %H A218945 Liam Naughton and Goetz Pfeiffer, <a href="http://schmidt.nuigalway.ie/tomlib/">Tomlib, The GAP table of marks library</a> %K A218945 nonn,more %O A218945 0,3 %A A218945 _Liam Naughton_, Nov 23 2012