A036644 - OEIS

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A036644

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

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

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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: A338229 A102841 A036637 * A000342 A189427 A355492

Adjacent sequences: A036641 A036642 A036643 * A036645 A036646 A036647

KEYWORD

nonn,fini

AUTHOR

N. J. A. Sloane.

STATUS

approved