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 A127294 #2 Mar 31 2012 13:21:14 %S A127294 1,1,2,3,6,21,80,255,965,3349,9366,30793,80798,396492 %N A127294 Maximum cycle size in range [A014137(n-1)..A014138(n-1)] of permutation A127291/A127292. %K A127294 nonn %O A127294 0,3 %A A127294 _Antti Karttunen_, Jan 16 2007