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 A130922 #5 Mar 31 2012 13:21:16 %S A130922 0,1,3,2,7,5,8,6,4,17,12,20,15,10,18,13,22,16,11,21,19,14,9,45,31,54, %T A130922 40,26,48,34,61,43,29,57,52,38,24,46,32,55,41,27,50,36,63,44,30,59,53, %U A130922 39,25,49,35,64,47,33,62,60,42,28,58,56,51,37,23,129,87,157,115,73 %N A130922 Signature permutation of a Catalan automorphism: composition of automorphisms *A057164 and *A074683. %H A130922 A. Karttunen, <a href="/A130922/b130922.txt">Table of n, a(n) for n = 0..2055</a> %H A130922 <a href="/index/Per#IntegerPermutationCatAuto">Index entries for signature-permutations of Catalan automorphisms</a> %Y A130922 Inverse: A130921. a(n) = A057164(A074683(n)). Cf. A086426. %K A130922 nonn %O A130922 0,3 %A A130922 _Antti Karttunen_, Jun 11 2007