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 A131158 #7 Jan 27 2014 16:24:19 %S A131158 0,1,3,2,8,7,4,5,6,22,21,18,17,20,11,10,9,13,12,14,15,16,19,64,63,59, %T A131158 58,62,50,49,48,45,46,55,54,57,61,33,30,26,27,29,28,23,25,36,35,24,32, %U A131158 31,34,39,38,37,41,40,42,43,44,47,51,52,53,56,60,196,195,190,189,194 %N A131158 Signature permutation of a Catalan automorphism: row 19 of A122286. %C A131158 Derived from automorphism *A130358 with recursion scheme SPINE. %H A131158 A. Karttunen, <a href="/A131158/b131158.txt">Table of n, a(n) for n = 0..2055</a> %H A131158 <a href="/index/Per#IntegerPermutationCatAuto">Index entries for signature-permutations of Catalan automorphisms</a> %Y A131158 Inverse: A131157. %K A131158 nonn,look %O A131158 0,3 %A A131158 _Antti Karttunen_, Jun 20 2007