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 A122330 #5 Mar 31 2012 13:21:12 %S A122330 0,1,3,2,7,8,5,4,6,17,18,20,22,21,12,13,11,9,10,15,19,16,14,45,46,48, %T A122330 50,49,54,55,61,63,64,57,59,58,62,31,32,34,36,35,30,33,28,23,24,29,25, %U A122330 27,26,40,41,52,56,60,43,53,44,47,39,51,38,37,42,129,130,132,134,133 %N A122330 Row 20 of A122284. %C A122330 The signature-permutation of the automorphism which is derived from the twentieth non-recursive automorphism *A089862 with recursion schema NEPEED (see A122284 for the definition). %H A122330 <a href="/index/Per#IntegerPermutationCatAuto">Index entries for signature-permutations of Catalan automorphisms</a> %Y A122330 Inverse: A122329. %K A122330 nonn %O A122330 0,3 %A A122330 _Antti Karttunen_, Sep 01 2006