Thanks to everyone who made a donation during our annual appeal! To see the list of donors, or make a donation, see the OEIS Foundation home page.
1,3
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:
1
1 2
1 2 3
1 3 5 6
1 3 7 9 10
1 4 11 17 19 20
1 4 15 28 34 36 37
The final diagonal gives A005195. Cf. A144529.
Sequence in context: A104468 A293003 A110062 * A254539 A283827 A122087
Adjacent sequences: A144212 A144213 A144214 * A144216 A144217 A144218
nonn,tabl,more
N. J. A. Sloane, Dec 20 2008
approved