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 A122357 #5 Mar 31 2012 13:21:12 %S A122357 0,1,3,2,8,7,5,6,4,22,21,18,20,17,13,12,15,19,16,10,14,11,9,64,63,59, %T A122357 62,58,50,49,55,61,57,46,54,48,45,36,35,32,34,31,41,40,52,60,56,43,47, %U A122357 53,44,27,26,38,51,42,29,39,33,30,24,37,28,25,23,196,195,190,194,189 %N A122357 Row 18 of A122201. %C A122357 The signature-permutation of the automorphism which is derived from the eighteenth non-recursive automorphism *A089861 with recursion schema FORK (see A122201 for the definition). %H A122357 <a href="/index/Per#IntegerPermutationCatAuto">Index entries for signature-permutations of Catalan automorphisms</a> %Y A122357 Inverse: A122358. %K A122357 nonn %O A122357 0,3 %A A122357 _Antti Karttunen_, Sep 01 2006