A036590 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

A036590

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

2

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

(list; graph; refs; listen; history; text; internal format)

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