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A218609 Distinct values of A218787 in the order of appearance. 4

%I #14 Feb 08 2013 04:59:33

%S 0,1,2,8,3,60,172,12,20,49,54,3016,10096,125744802,101035235,25,

%T 1358590114,40796719636668219,70,19049,1770,18,7,16261,

%U 82682568533587123,17,36,307,315899951699378231,3871315398,15215587727307698,59,9097520004151634187729920190004140

%N Distinct values of A218787 in the order of appearance.

%C a(n) = A014486-index for the n-th tendril of the infinite beanstalk (A179016), which has not been encountered before, constructed with lesser numbers coming to the left, and larger to the right hand side of each branch.

%H A. Karttunen, <a href="/A218609/b218609.txt">Table of n, a(n) for n = 1..72</a>

%H A. Karttunen, <a href="/A014486/a014486_1.pdf">Illustration of how binary trees (the second rightmost column) are encoded by A014486</a>

%F a(n) = A218787(A218611(n)).

%o (Scheme): (define (A218609 n) (A218787 (A218611 n)))

%Y These are the mirror-images of binary trees given in A218610, i.e. a(n) = A057163(A218610(n)). A218613 gives the sizes of these trees. Cf. A218611.

%K nonn

%O 1,3

%A _Antti Karttunen_, Nov 11 2012

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Last modified April 23 14:32 EDT 2024. Contains 371914 sequences. (Running on oeis4.)