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 A123716 #6 Mar 31 2012 13:21:12 %S A123716 0,1,2,3,4,8,6,7,5,9,22,20,21,10,14,19,16,17,18,15,11,12,13,23,64,62, %T A123716 63,24,54,61,57,58,59,55,25,26,27,37,60,53,56,38,42,51,44,45,46,47,48, %U A123716 49,50,43,52,39,28,29,40,30,31,32,41,33,34,35,36,65,196,194,195,66 %N A123716 Signature permutation of a Catalan automorphism: row 79361 of table A122204. %C A123716 This is the signature-permutation of Catalan automorphism which is derived from nonrecursive Catalan automorphism *A123492 with the recursion schema ENIPS (defined in A122204). %H A123716 <a href="/index/Per#IntegerPermutationCatAuto">Index entries for signature-permutations of Catalan automorphisms</a> %o A123716 (Scheme function, destructive implementation of this automorphism acting on S-expressions:) (define *A123716! (!ENIPS *A123492!)) %Y A123716 Inverse: A123715. Row 79361 of A122204. %K A123716 nonn %O A123716 0,3 %A A123716 _Antti Karttunen_, Oct 11 2006