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A090828
Number of cycles in range [A014137(n-1)..A014138(n-1)] of permutation A085163/A085164.
0
1, 1, 2, 3, 7, 14, 37, 95, 285, 876, 2862, 9582, 33022, 115454, 409721, 1467781, 5305211, 19302774, 70662612, 259980148, 960908596
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OFFSET
0,3
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: A123777 A245899 A246747 * A296416 A049367 A089790
Adjacent sequences: A090825 A090826 A090827 * A090829 A090830 A090831
KEYWORD
nonn
AUTHOR
Antti Karttunen, Dec 20 2003
STATUS
approved

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Last modified November 16 16:50 EST 2024. Contains 377799 sequences.
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