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 A130945 #5 Mar 31 2012 13:21:16 %S A130945 0,1,2,3,4,6,5,7,8,9,14,10,16,19,11,15,12,17,20,13,18,21,22,23,37,24, %T A130945 42,51,25,38,26,44,47,27,53,56,60,28,39,29,43,52,30,40,31,45,46,32,54, %U A130945 57,61,33,41,34,48,55,35,49,58,62,36,50,59,63,64,65,107,66,121,149,67 %N A130945 Signature permutation of a Catalan automorphism: row 8 of A130402. %H A130945 A. Karttunen, <a href="/A130945/b130945.txt">Table of n, a(n) for n = 0..2055</a> %H A130945 <a href="/index/Per#IntegerPermutationCatAuto">Index entries for signature-permutations of Catalan automorphisms</a> %Y A130945 Inverse: A130946. %K A130945 nonn %O A130945 0,3 %A A130945 _Antti Karttunen_, Jun 11 2007