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 A130981 #5 Mar 31 2012 13:21:16 %S A130981 0,1,2,3,5,4,6,7,8,13,12,11,10,9,15,14,16,18,17,19,20,21,22,36,35,34, %T A130981 32,31,33,30,29,27,26,28,25,24,23,41,40,39,38,37,43,42,47,50,49,44,48, %U A130981 46,45,52,51,53,55,54,56,57,59,58,60,61,62,63,64,106,105,104,101,100 %N A130981 Signature permutation of a Catalan automorphism: row 3 of A122287 and A122288. %C A130981 The signature-permutation of the self-inverse Catalan automorphism which is derived from automorphism *A130341 with recursion scheme FORK or KROF. %H A130981 A. Karttunen, <a href="/A130981/b130981.txt">Table of n, a(n) for n = 0..2055</a> %H A130981 <a href="/index/Per#IntegerPermutationCatAuto">Index entries for signature-permutations of Catalan automorphisms</a> %K A130981 nonn %O A130981 0,3 %A A130981 _Antti Karttunen_, Jun 20 2007