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 A130377 #2 Mar 31 2012 13:21:14 %S A130377 1,1,1,1,2,2,3,5,10,8,16,18,22,26 %N A130377 Number of cycles in range [A014137(n-1)..A014138(n-1)] of permutation A130369/A130370. %K A130377 nonn %O A130377 0,5 %A A130377 _Antti Karttunen_, Jun 05 2007