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 A130967 #2 Mar 31 2012 13:21:16 %S A130967 1,1,2,4,10,23,66,189,574,1773,5640,18208,59774,198654 %N A130967 Number of cycles in range [A014137(n-1)..A014138(n-1)] of permutations A130919/A130920. %Y A130967 Cf. A130968, A057513. %K A130967 nonn %O A130967 0,3 %A A130967 _Antti Karttunen_, Jun 11 2007