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 A130993 #5 Mar 31 2012 13:21:16 %S A130993 0,1,2,3,4,5,8,6,7,9,10,12,13,11,21,22,19,14,15,20,18,16,17,23,24,25, %T A130993 26,27,31,32,34,35,36,30,29,33,28,58,59,64,62,63,56,60,51,37,38,52,39, %U A130993 40,41,57,61,55,49,50,53,47,42,43,54,48,46,44,45,65,66,69,67,68,70,71 %N A130993 Signature permutation of a Catalan automorphism: row 11 of A122288. %C A130993 Derived from automorphism *A130353 with recursion scheme KROF. %H A130993 A. Karttunen, <a href="/A130993/b130993.txt">Table of n, a(n) for n = 0..2055</a> %H A130993 <a href="/index/Per#IntegerPermutationCatAuto">Index entries for signature-permutations of Catalan automorphisms</a> %Y A130993 Inverse: A130994. %K A130993 nonn %O A130993 0,3 %A A130993 _Antti Karttunen_, Jun 20 2007