A036647 - OEIS

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A036647

Number of 6-ary rooted trees with n nodes and height exactly 9.

0

0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 8, 43, 188, 728, 2593, 8698, 27890, 86384, 260360, 767802, 2224500, 6351734, 17917830, 50031879, 138496032, 380530622, 1038804643, 2819830134, 7616354584, 20480875544, 54856709018, 146407218037, 389486931550

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OFFSET

0,11

LINKS

Table of n, a(n) for n=0..32.

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: A036424 A036633 A036640 * A000429 A055853 A137748

Adjacent sequences: A036644 A036645 A036646 * A036648 A036649 A036650

KEYWORD

nonn,fini

AUTHOR

N. J. A. Sloane.

STATUS

approved