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A036641
Number of 6-ary rooted trees with n nodes and height exactly 3.
0
0, 0, 0, 1, 2, 4, 6, 10, 14, 19, 24, 31, 37, 46, 52, 61, 68, 76, 81, 88, 90, 94, 94, 94, 90, 88, 81, 76, 68, 61, 52, 46, 37, 31, 24, 19, 14, 11, 7, 5, 3, 2, 1, 1
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OFFSET
0,5
LINKS
Table of n, a(n) for n=0..43.
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:
A007782
A035501
A024204
*
A260732
A062425
A121386
Adjacent sequences:
A036638
A036639
A036640
*
A036642
A036643
A036644
KEYWORD
nonn
,
fini
,
full
AUTHOR
N. J. A. Sloane
.
STATUS
approved
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Last modified August 17 22:50 EDT 2024. Contains 375238 sequences. (Running on oeis4.)