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 A126316 #5 Mar 31 2012 13:21:13 %S A126316 0,1,3,2,7,6,5,8,4,22,13,17,16,14,19,11,12,21,20,10,18,15,9,63,35,62, %T A126316 61,34,59,32,55,52,29,45,44,42,37,56,30,53,51,28,50,27,41,64,36,31,58, %U A126316 57,54,47,25,39,60,33,26,49,48,40,24,46,43,38,23,196,120,106,148,78 %N A126316 Signature-permutation of a Catalan automorphism: composition of A125976 and A069771. %C A126316 Like A069771, A069772, A125976 and A126313/A126314, this automorphism keeps symmetric Dyck paths symmetric, but not necessarily same. %H A126316 <a href="/index/Per#IntegerPermutationCatAuto">Index entries for signature-permutations of Catalan automorphisms</a> %Y A126316 Inverse: A126315. a(n) = A125976(A069771(n)) = A069771(A126290(n)) = A057164(A126314(n)). %K A126316 nonn %O A126316 0,3 %A A126316 _Antti Karttunen_, Jan 16 2007