A036645 - OEIS

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A036645

Number of 6-ary rooted trees with n nodes and height exactly 7.

0

0, 0, 0, 0, 0, 0, 0, 1, 6, 26, 94, 308, 941, 2738, 7681, 20968, 56018, 147131, 381058, 975598, 2473409, 6218751, 15522486, 38501024, 94961417, 233053346, 569395697, 1385522234, 3359014072, 8116121300, 19549835022, 46957109735, 112490488043

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OFFSET

0,9

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: A036631 A224288 A036638 * A000393 A106392 A143132

Adjacent sequences: A036642 A036643 A036644 * A036646 A036647 A036648

KEYWORD

nonn,fini

AUTHOR

N. J. A. Sloane.

STATUS

approved