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 A131003 #5 Mar 31 2012 13:21:16 %S A131003 0,1,3,2,8,7,5,4,6,22,21,18,17,20,13,12,10,9,11,15,19,16,14,64,63,59, %T A131003 58,62,50,49,46,45,48,55,61,57,54,36,35,32,31,34,27,26,24,23,25,29,33, %U A131003 30,28,41,40,52,60,56,43,47,44,53,38,51,37,39,42,196,195,190,189,194 %N A131003 Signature permutation of a Catalan automorphism: row 18 of A122288. %C A131003 Derived from automorphism *A130363 with recursion scheme KROF. %H A131003 A. Karttunen, <a href="/A131003/b131003.txt">Table of n, a(n) for n = 0..2055</a> %H A131003 <a href="/index/Per#IntegerPermutationCatAuto">Index entries for signature-permutations of Catalan automorphisms</a> %Y A131003 Inverse: A131004. %K A131003 nonn %O A131003 0,3 %A A131003 _Antti Karttunen_, Jun 20 2007