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 A130960 #5 Mar 31 2012 13:21:16 %S A130960 0,1,3,2,8,6,7,4,5,21,22,19,15,14,20,16,18,10,12,17,9,11,13,58,59,62, %T A130960 63,64,56,60,52,41,39,51,40,37,38,57,61,53,43,42,55,47,50,25,27,48,31, %U A130960 34,30,54,44,49,23,32,46,26,28,33,45,24,29,36,35,170,171,174,175,176 %N A130960 Signature permutation of a Catalan automorphism: row 20 of A130403. %H A130960 A. Karttunen, <a href="/A130960/b130960.txt">Table of n, a(n) for n = 0..2055</a> %H A130960 <a href="/index/Per#IntegerPermutationCatAuto">Index entries for signature-permutations of Catalan automorphisms</a> %Y A130960 Inverse: A130959. %K A130960 nonn %O A130960 0,3 %A A130960 _Antti Karttunen_, Jun 11 2007