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 A130391 #5 Mar 31 2012 13:21:16 %S A130391 0,1,2,3,4,5,8,6,7,9,10,13,11,12,21,22,19,14,15,20,18,16,17,23,24,27, %T A130391 25,26,35,36,33,28,29,34,32,30,31,58,59,62,63,64,56,60,51,37,38,52,40, %U A130391 41,39,57,61,55,49,50,53,47,42,43,54,48,46,44,45,65,66,69,67,68,77,78 %N A130391 Signature permutation of a Catalan automorphism: row 11 of A130400. %C A130391 The signature-permutation of the Catalan automorphism which is derived from the eleventh non-recursive Catalan automorphism *A089857 with recursion schema INORDER (see A130400 for the definition). %H A130391 A. Karttunen, <a href="/A130391/b130391.txt">Table of n, a(n) for n = 0..2055</a> %H A130391 <a href="/index/Per#IntegerPermutationCatAuto">Index entries for signature-permutations of Catalan automorphisms</a> %Y A130391 Inverse: A130392. %K A130391 nonn %O A130391 0,3 %A A130391 _Antti Karttunen_, Jun 11 2007