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A218609 Distinct values of A218787 in the order of appearance. 4
0, 1, 2, 8, 3, 60, 172, 12, 20, 49, 54, 3016, 10096, 125744802, 101035235, 25, 1358590114, 40796719636668219, 70, 19049, 1770, 18, 7, 16261, 82682568533587123, 17, 36, 307, 315899951699378231, 3871315398, 15215587727307698, 59, 9097520004151634187729920190004140 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

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.

LINKS

A. Karttunen, Table of n, a(n) for n = 1..72

A. Karttunen, Illustration of how binary trees (the second rightmost column) are encoded by A014486

FORMULA

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

PROG

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

CROSSREFS

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.

Sequence in context: A126951 A282637 A256411 * A268491 A076588 A068565

Adjacent sequences:  A218606 A218607 A218608 * A218610 A218611 A218612

KEYWORD

nonn

AUTHOR

Antti Karttunen, Nov 11 2012

STATUS

approved

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Last modified May 24 19:38 EDT 2022. Contains 354043 sequences. (Running on oeis4.)