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A036644 Number of 6-ary rooted trees with n nodes and height exactly 6. 0
0, 0, 0, 0, 0, 0, 1, 5, 19, 61, 180, 498, 1318, 3376, 8433, 20659, 49802, 118506, 278857, 650072, 1503003, 3450424, 7870894, 17854238, 40295522, 90531067, 202552028, 451479327, 1002843896, 2220473234, 4902040602, 10792481396 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,8

LINKS

Table of n, a(n) for n=0..31.

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: A036630 A102841 A036637 * A000342 A189427 A212339

Adjacent sequences:  A036641 A036642 A036643 * A036645 A036646 A036647

KEYWORD

nonn,fini

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified November 11 18:50 EST 2019. Contains 329031 sequences. (Running on oeis4.)