A036419 - OEIS

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A036419

Number of ternary rooted trees with n nodes and height exactly 4.

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

(list; graph; refs; listen; history; text; internal format)

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