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A036589 Number of binary rooted trees with n nodes and height at most 6. 2
1, 1, 1, 2, 3, 6, 11, 22, 39, 70, 118, 200, 324, 526, 825, 1290, 1958, 2952, 4335, 6305, 8948, 12547, 17183, 23200, 30593, 39697, 50305, 62641, 76157, 90883, 105860, 120915, 134719, 147040, 156412, 162812, 164968, 163377, 157278 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,4

LINKS

Alois P. Heinz, Table of n, a(n) for n = 0..63

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: A018268 A082616 A018613 * A251656 A123341 A238351

Adjacent sequences:  A036586 A036587 A036588 * A036590 A036591 A036592

KEYWORD

nonn,fini,full

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified November 28 18:39 EST 2021. Contains 349415 sequences. (Running on oeis4.)