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 A130966 #5 Mar 31 2012 13:21:16 %S A130966 0,1,3,2,7,8,4,5,6,17,18,20,21,22,10,11,9,12,13,14,19,16,15,45,46,48, %T A130966 49,50,54,55,57,58,59,61,62,63,64,26,27,33,30,29,23,28,24,31,32,25,34, %U A130966 35,36,38,39,51,56,60,42,53,44,47,37,52,41,40,43,129,130,132,133,134 %N A130966 Signature permutation of a Catalan automorphism: row 16 of A130403. %H A130966 A. Karttunen, <a href="/A130966/b130966.txt">Table of n, a(n) for n = 0..2055</a> %H A130966 <a href="/index/Per#IntegerPermutationCatAuto">Index entries for signature-permutations of Catalan automorphisms</a> %Y A130966 Inverse: A130965. %K A130966 nonn %O A130966 0,3 %A A130966 _Antti Karttunen_, Jun 11 2007