A089413 Number of cycles in range [A014137(n-1)..A014138(n-1)] of permutation A071655/A071656.

1, 1, 1, 2, 2, 4, 4, 5, 5, 11, 11, 17, 11, 21, 17, 30, 22, 52, 24, 74, 36

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

Bisections: A089409, A089416. Cf. A089411.

Sequence in context: A288773 A288774 A113474 * A159267 A127311 A302929

Adjacent sequences: A089410 A089411 A089412 * A089414 A089415 A089416

Keyword

nonn

Author

Antti Karttunen, Nov 29 2003

Status

approved