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 A131160 #5 Mar 31 2012 13:21:17 %S A131160 0,1,3,2,8,7,6,4,5,22,21,20,18,17,19,16,14,9,10,15,11,13,12,64,63,62, %T A131160 59,58,61,57,55,49,50,54,48,45,46,60,56,53,47,44,51,42,37,23,24,38,25, %U A131160 27,26,52,43,39,28,29,41,33,36,35,40,30,34,32,31,196,195,194,190,189 %N A131160 Signature permutation of a Catalan automorphism: row 21 of A122286. %C A131160 Derived from automorphism *A130360 with recursion scheme SPINE. %H A131160 A. Karttunen, <a href="/A131160/b131160.txt">Table of n, a(n) for n = 0..2055</a> %H A131160 <a href="/index/Per#IntegerPermutationCatAuto">Index entries for signature-permutations of Catalan automorphisms</a> %Y A131160 Inverse: A131159. %K A131160 nonn %O A131160 0,3 %A A131160 _Antti Karttunen_, Jun 20 2007