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 A130937 #5 Mar 31 2012 13:21:16 %S A130937 0,1,2,3,4,5,8,6,7,9,10,13,11,12,20,21,19,14,15,22,16,17,18,23,24,27, %T A130937 25,26,34,35,33,28,29,36,30,31,32,54,55,59,57,58,53,56,51,37,38,52,39, %U A130937 40,41,61,64,60,42,43,62,44,45,46,63,47,48,49,50,65,66,69,67,68,76,77 %N A130937 Signature permutation of a Catalan automorphism: row 4 of A130402. %H A130937 A. Karttunen, <a href="/A130937/b130937.txt">Table of n, a(n) for n = 0..2055</a> %H A130937 <a href="/index/Per#IntegerPermutationCatAuto">Index entries for signature-permutations of Catalan automorphisms</a> %Y A130937 Inverse: A130938. %K A130937 nonn %O A130937 0,3 %A A130937 _Antti Karttunen_, Jun 11 2007