A036590 Number of binary rooted trees with n nodes and height at most 7.

1, 1, 1, 2, 3, 6, 11, 23, 45, 90, 171, 325, 598, 1097, 1972, 3531, 6225, 10915, 18898, 32507, 55302, 93410, 156208, 259250, 426227, 695235, 1123742, 1801614, 2862591, 4510432, 7043455, 10904830, 16731444, 25446285, 38349306, 57278489

Offset

0,4

Links

Alois P. Heinz, Table of n, a(n) for n = 0..127

E. M. Rains and N. J. A. Sloane, On Cayley's Enumeration of Alkanes (or 4-Valent Trees), J. Integer Sequences, Vol. 2 (1999), Article 99.1.1.

Index entries for sequences related to rooted trees

Crossrefs

Sequence in context: A316500 A123769 A093304 * A247139 A036591 A365821

Adjacent sequences: A036587 A036588 A036589 * A036591 A036592 A036593

Keyword

nonn,fini,full

Author

N. J. A. Sloane.

Status

approved