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 A130994 #5 Mar 31 2012 13:21:16 %S A130994 0,1,2,3,4,5,7,8,6,9,10,13,11,12,17,18,21,22,20,16,19,14,15,23,24,25, %T A130994 26,27,36,34,33,28,29,35,30,31,32,45,46,48,49,50,58,59,63,64,62,57,61, %U A130994 54,55,44,47,56,60,53,42,51,37,38,43,52,40,41,39,65,66,68,69,67,70,71 %N A130994 Signature permutation of a Catalan automorphism: row 9 of A122287. %C A130994 Derived from automorphism *A130354 with recursion scheme FORK. %H A130994 A. Karttunen, <a href="/A130994/b130994.txt">Table of n, a(n) for n = 0..2055</a> %H A130994 <a href="/index/Per#IntegerPermutationCatAuto">Index entries for signature-permutations of Catalan automorphisms</a> %Y A130994 Inverse: A130993. %K A130994 nonn %O A130994 0,3 %A A130994 _Antti Karttunen_, Jun 20 2007