A038062 Number of labeled trees with 3-colored nodes.

1, 3, 9, 81, 1296, 30375, 944784, 36756909, 1719926784, 94143178827, 5904900000000, 417703359617577, 32905425960566784, 2857282535902251951, 271165225379757133824, 27925772039747314453125

Offset

0,2

Links

Table of n, a(n) for n=0..15.

Index entries for sequences related to trees

Formula

A038061/n. E.g.f. B(3x) where B(x) is e.g.f. of A000272.

Crossrefs

Cf. A000272, A038055-A038061.

Sequence in context: A215114 A032108 A216206 * A218149 A011764 A018624

Adjacent sequences: A038059 A038060 A038061 * A038063 A038064 A038065

Keyword

nonn

Author

Christian G. Bower, Jan 04 1999

Status

approved