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 A130943 #5 Mar 31 2012 13:21:16 %S A130943 0,1,2,3,5,4,6,7,8,13,12,11,9,10,15,14,16,18,17,19,20,21,22,36,35,34, %T A130943 31,32,33,30,28,24,23,29,25,26,27,41,40,39,37,38,43,42,47,49,50,44,48, %U A130943 45,46,52,51,53,55,54,56,57,59,58,60,61,62,63,64,106,105,104,100,101 %N A130943 Signature permutation of a Catalan automorphism: row 7 of A130402. %H A130943 A. Karttunen, <a href="/A130943/b130943.txt">Table of n, a(n) for n = 0..2055</a> %H A130943 <a href="/index/Per#IntegerPermutationCatAuto">Index entries for signature-permutations of Catalan automorphisms</a> %Y A130943 Inverse: A130944. %K A130943 nonn %O A130943 0,3 %A A130943 _Antti Karttunen_, Jun 11 2007