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A036641 Number of 6-ary rooted trees with n nodes and height exactly 3. 0
0, 0, 0, 1, 2, 4, 6, 10, 14, 19, 24, 31, 37, 46, 52, 61, 68, 76, 81, 88, 90, 94, 94, 94, 90, 88, 81, 76, 68, 61, 52, 46, 37, 31, 24, 19, 14, 11, 7, 5, 3, 2, 1, 1 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,5

LINKS

Table of n, a(n) for n=0..43.

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: A007782 A035501 A024204 * A260732 A062425 A121386

Adjacent sequences:  A036638 A036639 A036640 * A036642 A036643 A036644

KEYWORD

nonn,fini,full

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified November 30 13:47 EST 2021. Contains 349420 sequences. (Running on oeis4.)