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 A131165 #5 Mar 31 2012 13:21:17 %S A131165 0,1,3,2,8,7,4,5,6,22,21,17,18,20,11,10,9,12,13,14,15,16,19,64,63,58, %T A131165 59,62,48,46,45,49,50,54,55,57,61,33,30,26,27,29,28,23,24,31,32,25,34, %U A131165 35,36,39,38,37,40,41,42,43,44,47,51,52,53,56,60,196,195,189,190,194 %N A131165 Signature permutation of a Catalan automorphism: row 19 of A122285. %C A131165 Derived from automorphism *A130365 with recursion scheme ENIPS. %H A131165 A. Karttunen, <a href="/A131165/b131165.txt">Table of n, a(n) for n = 0..2055</a> %H A131165 <a href="/index/Per#IntegerPermutationCatAuto">Index entries for signature-permutations of Catalan automorphisms</a> %Y A131165 Inverse: A131166. %K A131165 nonn %O A131165 0,3 %A A131165 _Antti Karttunen_, Jun 20 2007