1,7

Table of n, a(n) for n=1..31.

Index entries for sequences related to trees

G.f.: A(x) = B(x) + (C(x^2) - C(x)^2)/2. B(x) is g.f. of A106362. C(x) is g.f. of A106361.

Cf. A002995.

Sequence in context: A298913 A266019 A146155 * A128658 A234042 A001203

Adjacent sequences: A106360 A106361 A106362 * A106364 A106365 A106366

nonn

Christian G. Bower, Apr 29 2005

approved