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A089406 Number of cycles in range [A014137(n-1)..A014138(n-1)] of permutation A082345/A082346. 0
1, 1, 1, 3, 6, 16, 37, 95, 238, 624, 1650, 4478, 12356, 34756, 99313, 288145, 847366, 2523092, 7597834, 23117382, 71007196 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,4

COMMENTS

The number of orbits to which the corresponding automorphism(s) partitions the set of A000108(n) binary trees with n internal nodes.

LINKS

Table of n, a(n) for n=0..20.

A. Karttunen, C-program for computing the initial terms of this sequence

CROSSREFS

Sequence in context: A130095 A293993 A072824 * A027852 A203068 A321229

Adjacent sequences:  A089403 A089404 A089405 * A089407 A089408 A089409

KEYWORD

nonn

AUTHOR

Antti Karttunen, Nov 29 2003

STATUS

approved

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Last modified June 20 17:09 EDT 2021. Contains 345178 sequences. (Running on oeis4.)