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 A130929 #5 Mar 31 2012 13:21:16 %S A130929 0,1,3,2,7,8,5,4,6,17,18,20,21,22,12,13,10,9,11,15,19,16,14,45,46,48, %T A130929 49,50,54,55,57,58,59,61,62,63,64,31,32,34,35,36,26,27,24,23,25,29,33, %U A130929 30,28,40,41,52,56,60,43,47,44,53,38,51,39,37,42,129,130,132,133,134 %N A130929 Signature permutation of a Catalan automorphism: row 18 of A130400. %C A130929 The signature-permutation of the Catalan automorphism which is derived from the 18th non-recursive Catalan automorphism *A089861 with recursion schema INORDER (see A130400 for the definition). %H A130929 A. Karttunen, <a href="/A130929/b130929.txt">Table of n, a(n) for n = 0..2055</a> %H A130929 <a href="/index/Per#IntegerPermutationCatAuto">Index entries for signature-permutations of Catalan automorphisms</a> %Y A130929 Inverse: A130930. %K A130929 nonn %O A130929 0,3 %A A130929 _Antti Karttunen_, Jun 11 2007