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 A126318 #2 Mar 31 2012 13:21:13 %S A126318 1,1,1,3,3,5,11,45,257,575,2470,10892,30297 %N A126318 Maximum cycle size in range [A014137(n-1)..A014138(n-1)] of permutation A125977/A125978. %K A126318 nonn %O A126318 0,4 %A A126318 _Antti Karttunen_, Jan 16 2007