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 A073196 #7 Oct 15 2015 10:57:13 %S A073196 0,1,2,3,4,6,7,5,8,9,10,14,16,19,17,21,12,11,15,18,13,20,22,23,24,25, %T A073196 26,27,37,38,42,44,53,51,56,47,60,45,46,58,49,59,31,34,30,28,29,40,39, %U A073196 43,52,48,62,35,33,41,57,32,54,63,55,36,61,50,64,65,66,67,68,69,70,71 %N A073196 Permutation of natural numbers induced by the Catalan bijection gmA073196 acting on the parenthesizations as ordered by A014486. %C A073196 Is there an equivalent Catalan bijection in A073200? %H A073196 A. Karttunen, <a href="http://www.iki.fi/~kartturi/matikka/Nekomorphisms/gatomorf.htm">Gatomorphisms</a> (with the complete Scheme source) %H A073196 <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a> %o A073196 (Scheme function implementing this automorphism on list-structures:) %o A073196 (define (gmA073196 s) (cond ((pair? s) (gmA072797! s) (gmA073196 (car s)) (gmA072796! s) (gmA073196 (car s)))) s) %Y A073196 Inverse permutation: A073197. The car/cdr-flipped conjugate of A073207, i.e. A073196(n) = A057163(A073207(A057163(n))). Cf. also A073194-A073199. %Y A073196 The scheme functions gma072796! and gma072797! referred to below are given in A072796 and A072797. %K A073196 nonn %O A073196 0,3 %A A073196 _Antti Karttunen_, Jun 25 2002