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A074689 Permutation of natural numbers induced by the Catalan bijection gmA074689! acting on the parenthesizations encoded by A014486/A063171. 4

%I

%S 0,1,3,2,8,7,4,5,6,22,21,17,18,20,9,10,11,12,13,14,15,19,16,64,63,58,

%T 59,62,45,46,48,49,50,54,55,61,57,23,24,25,26,27,28,29,30,31,32,33,34,

%U 35,36,37,38,39,40,41,51,52,60,56,42,43,44,47,53,196,195,189,190,194

%N Permutation of natural numbers induced by the Catalan bijection gmA074689! acting on the parenthesizations encoded by A014486/A063171.

%H A. Karttunen, <a href="http://www.iki.fi/~kartturi/matikka/Nekomorphisms/gatomorf.htm">Gatomorphisms</a> (with the complete Scheme source)

%H <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a>

%o (Scheme function implementing this automorphism on list-structures:)

%o (define (gmA074689! s) (cond ((pair? s) (gmrobr! s) (gmA074689! (car s)))) s)

%Y Inverse of A074690. a(n) = A057163(A074685(A057163(n))). Cf. A074681-A074688. Occurs in A073200.

%K nonn

%O 0,3

%A _Antti Karttunen_, Sep 11 2002

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Last modified January 25 01:33 EST 2020. Contains 331229 sequences. (Running on oeis4.)