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 A130988 #5 Mar 31 2012 13:21:16 %S A130988 0,1,2,3,4,5,7,6,8,9,10,11,12,13,17,18,16,14,15,21,19,20,22,23,24,26, %T A130988 25,27,28,29,30,31,32,33,35,34,36,45,46,49,48,50,44,47,42,37,38,43,40, %U A130988 39,41,58,59,56,51,52,57,53,54,55,63,60,61,62,64,65,66,67,68,69,73,74 %N A130988 Signature permutation of a Catalan automorphism: row 8 of A122287. %C A130988 Derived from automorphism *A082340 with recursion scheme FORK. %H A130988 A. Karttunen, <a href="/A130988/b130988.txt">Table of n, a(n) for n = 0..2055</a> %H A130988 <a href="/index/Per#IntegerPermutationCatAuto">Index entries for signature-permutations of Catalan automorphisms</a> %Y A130988 Inverse: A130987. %K A130988 nonn %O A130988 0,3 %A A130988 _Antti Karttunen_, Jun 20 2007