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 A069787 #8 May 22 2024 23:49:08 %S A069787 0,1,2,3,4,5,7,6,8,9,10,12,11,13,17,18,16,14,15,21,20,19,22,23,24,26, %T A069787 25,27,31,32,30,28,29,35,34,33,36,45,46,49,48,50,44,47,42,37,38,43,40, %U A069787 39,41,58,59,57,54,55,56,53,51,52,63,62,61,60,64,65,66,68,67,69,73,74 %N A069787 Self-inverse permutation of natural numbers induced by the automorphism DeepRev1CarSide! acting on the parenthesizations encoded by A014486. %H A069787 A. Karttunen, <a href="http://www.iki.fi/~kartturi/matikka/Nekomorphisms/gatomorf.htm">Gatomorphisms</a> (Includes the complete Scheme program for computing this sequence) %H A069787 <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a> %F A069787 a(n) = A057163(A057164(A057163(n))). %Y A069787 The car/cdr-flipped conjugate of A057164. %K A069787 nonn %O A069787 0,3 %A A069787 _Antti Karttunen_, Apr 16 2002