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A036625 Number of 6-ary rooted trees with n nodes and height at most 8. +0
1
1, 1, 1, 2, 4, 9, 20, 48, 114, 282, 701, 1763, 4438, 11212, 28287, 71357, 179696, 451946, 1134720, 2844954, 7122041, 17805884, 44459523, 110882964, 276241029, 687501846, 1709406423, 4246490811, 10540185493, 26140852721, 64782959403 (list; graph; listen)
OFFSET

0,4

LINKS

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

Adjacent sequences: A036622 A036623 A036624 this_sequence A036626 A036627 A036628

Sequence in context: A052329 A036624 A034823 this_sequence A003019 A036626 A036722

KEYWORD

nonn,fini

AUTHOR

njas

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Last modified October 15 20:12 EDT 2008. Contains 145099 sequences.


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