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 A131168 #5 Mar 31 2012 13:21:17 %S A131168 0,1,3,2,6,8,7,5,4,19,14,15,21,22,16,20,17,11,13,18,12,10,9,51,60,56, %T A131168 38,37,52,40,39,58,59,41,62,63,64,53,42,43,57,61,44,54,45,33,28,46,29, %U A131168 35,36,47,55,48,30,34,49,31,25,27,50,32,26,24,23,177,149,150,186,191 %N A131168 Signature permutation of a Catalan automorphism: row 16 of A122286. %C A131168 Derived from automorphism *A130368 with recursion scheme SPINE. %H A131168 A. Karttunen, <a href="/A131168/b131168.txt">Table of n, a(n) for n = 0..2055</a> %H A131168 <a href="/index/Per#IntegerPermutationCatAuto">Index entries for signature-permutations of Catalan automorphisms</a> %Y A131168 Inverse: A131167. %K A131168 nonn %O A131168 0,3 %A A131168 _Antti Karttunen_, Jun 20 2007