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A036419
Number of ternary rooted trees with n nodes and height exactly 4.
0
0, 0, 0, 0, 1, 3, 8, 15, 27, 43, 67, 97, 136, 183, 239, 300, 369, 432, 498, 551, 594, 614, 624, 601, 570, 514, 453, 378, 312, 238, 181, 128, 89, 56, 37, 20, 12, 6, 3, 1, 1
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OFFSET
0,6
LINKS
Table of n, a(n) for n=0..40.
A. T. Balaban, J. W. Kennedy and L. V. Quintas,
The number of alkanes having n carbons and a longest chain of length d
, J. Chem. Education, 65 (1988), 304-313.
Index entries for sequences related to rooted trees
CROSSREFS
Cf.
A036370
,
A036437
.
Sequence in context:
A210979
A047837
A047873
*
A054107
A031125
A294423
Adjacent sequences:
A036416
A036417
A036418
*
A036420
A036421
A036422
KEYWORD
nonn
,
fini
,
full
AUTHOR
N. J. A. Sloane
, Eric Rains (rains(AT)caltech.edu)
STATUS
approved
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Last modified April 24 00:30 EDT 2024. Contains 371917 sequences. (Running on oeis4.)