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 A122286 #9 Jul 12 2012 00:39:49 %S A122286 0,1,0,2,1,0,3,3,1,0,4,2,2,1,0,5,8,3,2,1,0,6,7,4,3,2,1,0,7,6,6,5,3,2, %T A122286 1,0,8,5,5,4,5,3,2,1,0,9,4,7,6,6,6,3,2,1,0,10,22,8,7,4,5,6,3,2,1,0,11, %U A122286 21,9,8,7,4,4,4,3,2,1,0,12,20,14,13,8,7,5,5,4,3,2,1,0,13,17,11,12,13 %N A122286 Signature permutations of SPINE-transformations of Catalan automorphisms in table A122204. %C A122286 Row n is the signature permutation of the Catalan automorphism which is obtained from the n-th automorphism in the table A122204 with the recursion scheme "SPINE", or equivalently row n is obtained as SPINE(ENIPS(n-th row of A089840)). See A122203 and A122204 for the description of SPINE and ENIPS. Each row occurs only once in this table. Inverses of these permutations can be found in table A122285. This table contains also all the rows of A122203 and A089840. %D A122286 A. Karttunen, paper in preparation, draft available by e-mail. %H A122286 <a href="/index/Per#IntegerPermutationCatAuto">Index entries for signature-permutations of Catalan automorphisms</a> %Y A122286 The first 22 rows of this table: row 0 (identity permutation): A001477, 1: A082347, 2: A057508, 3: A131142, 4: A131148, 5: A131146, 6: A131144, 7: A131173, 8: A131170, 9: A131154, 10: A131152, 11: A131150, 12: A057504, 13: A131164, 14: A131166, 15: A069767, 16: A131168, 17: A131172, 18: A131156, 19: A131158, 20: A131162, 21: A131160. Other rows: row 169: A130359, 3608: A130339, 3617: A057509, 65167: A074685. %Y A122286 See also tables A089840, A122200, A122201-A122204, A122283-A122284, A122285-A122288, A122289-A122290, A130400-A130403. As a sequence differs from A122285 for the first time at n=92, where a(n)=17, while A122285(n)=18. %K A122286 nonn,tabl %O A122286 0,4 %A A122286 _Antti Karttunen_, Sep 01 2006, Jun 20 2007