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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
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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:
A072824
A360229
A369432
*
A027852
A203068
A362145
Adjacent sequences:
A089403
A089404
A089405
*
A089407
A089408
A089409
KEYWORD
nonn
AUTHOR
Antti Karttunen
, Nov 29 2003
STATUS
approved
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Last modified April 25 07:07 EDT 2024. Contains 371964 sequences. (Running on oeis4.)