0,2

Index entries for sequences related to trees

G.f.: B(x)-B^2(x)/2+B(x^2)/2, where B(x) is g.f. for A038059.

Cf. A000055, A038055-A038062.

Equals 3 * A006965(n).

Sequence in context: A152733 A102962 A076510 this_sequence A135504 A057268 A085401

Adjacent sequences: A038057 A038058 A038059 this_sequence A038061 A038062 A038063

nonn

Christian G. Bower (bowerc(AT)usa.net), Jan 04 1999.