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 A130963 #5 Mar 31 2012 13:21:16 %S A130963 0,1,3,2,7,6,8,4,5,17,16,18,14,15,22,19,20,9,10,21,11,12,13,45,44,46, %T A130963 42,43,50,47,48,37,38,49,39,40,41,62,60,63,51,52,61,53,54,23,24,55,25, %U A130963 26,27,64,56,57,28,29,58,30,31,32,59,33,34,35,36,129,128,130,126,127 %N A130963 Signature permutation of a Catalan automorphism: row 19 of A130402. %H A130963 A. Karttunen, <a href="/A130963/b130963.txt">Table of n, a(n) for n = 0..2055</a> %H A130963 <a href="/index/Per#IntegerPermutationCatAuto">Index entries for signature-permutations of Catalan automorphisms</a> %Y A130963 Inverse: A130964. %K A130963 nonn %O A130963 0,3 %A A130963 _Antti Karttunen_, Jun 11 2007