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 A130955 #5 Mar 31 2012 13:21:16 %S A130955 0,1,3,2,7,8,4,6,5,20,18,22,17,21,10,9,14,19,16,11,15,12,13,55,57,50, %T A130955 61,49,63,64,45,48,54,58,46,62,59,26,27,23,25,24,38,37,51,60,56,42,44, %U A130955 53,47,29,28,39,52,43,30,40,31,32,33,41,34,35,36,167,161,173,162,183 %N A130955 Signature permutation of a Catalan automorphism: row 14 of A130402. %H A130955 A. Karttunen, <a href="/A130955/b130955.txt">Table of n, a(n) for n = 0..2055</a> %H A130955 <a href="/index/Per#IntegerPermutationCatAuto">Index entries for signature-permutations of Catalan automorphisms</a> %Y A130955 Inverse: A130956. %K A130955 nonn %O A130955 0,3 %A A130955 _Antti Karttunen_, Jun 11 2007