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 A130933 #5 Mar 31 2012 13:21:16 %S A130933 0,1,3,2,7,8,4,5,6,17,18,20,21,22,10,11,9,12,13,14,16,19,15,45,46,48, %T A130933 49,50,54,55,57,58,59,61,62,63,64,26,27,30,33,29,23,28,24,31,32,25,34, %U A130933 35,36,38,39,42,47,53,51,44,56,60,37,43,40,41,52,129,130,132,133,134 %N A130933 Signature permutation of a Catalan automorphism: row 20 of A130400. %C A130933 The signature-permutation of the Catalan automorphism which is derived from the 20th non-recursive Catalan automorphism *A089862 with recursion schema INORDER (see A130400 for the definition). %H A130933 A. Karttunen, <a href="/A130933/b130933.txt">Table of n, a(n) for n = 0..2055</a> %H A130933 <a href="/index/Per#IntegerPermutationCatAuto">Index entries for signature-permutations of Catalan automorphisms</a> %Y A130933 Inverse: A130934. %K A130933 nonn %O A130933 0,3 %A A130933 _Antti Karttunen_, Jun 11 2007