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A089876
Number of cycles in range [A014137(n-1)..A014138(n-1)] of permutation A071667/A071668.
0
1, 1, 1, 2, 3, 14, 22, 62, 127, 320, 756, 1888, 4440, 10996, 26784, 67004, 166449, 417848, 1041262, 2596506, 6427116
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.
CROSSREFS
Sequence in context: A025090 A024478 A024603 * A363474 A337624 A025092
KEYWORD
nonn
AUTHOR
Antti Karttunen, Nov 29 2003
STATUS
approved