A036638 - OEIS

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A036638

Number of 5-ary rooted trees with n nodes and height exactly 7.

1

0, 0, 0, 0, 0, 0, 0, 1, 6, 26, 94, 308, 935, 2703, 7524, 20375, 53969, 140527, 360733, 915299, 2299430, 5728098, 14164216, 34799522, 85007869, 206595478, 499774485, 1203951992, 2889243181, 6909371375, 16469937376, 39142669201, 92769809724

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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: A011780 A036631 A224288 * A036645 A000393 A106392

Adjacent sequences: A036635 A036636 A036637 * A036639 A036640 A036641

KEYWORD

nonn,fini

AUTHOR

N. J. A. Sloane.

STATUS

approved