1,6

The number of nodes in this graph is given by A144215.

Table of n, a(n) for n=1..28.

R. Neville, Graphs whose vertices are forests with bounded degree, Graph Theory Notes of New York, LIV (2008), 12-21.

Triangle begins:

0

0 1

0 1 2

0 2 5 6

0 2 9 13 14

0 3 18 32 36 37

0 3 28 67 82 87 88

Cf. A144530.

Sequence in context: A305628 A094721 A301951 * A319498 A011297 A110282

Adjacent sequences: A144526 A144527 A144528 * A144530 A144531 A144532

nonn,tabl,more

N. J. A. Sloane, Dec 20 2008

approved