1,2

A generator is a leaf or a node with just one child.

N. J. A. Sloane, Transforms

Index entries for sequences related to rooted trees

G.f. satisfies (2-x)*A(x) = x - 1 + EULER(A(x))

Cf. A108522-A108529, A007151, A000081, A000669.

Sequence in context: A047063 A148395 A148396 this_sequence A148397 A148398 A100442

Adjacent sequences: A108518 A108519 A108520 this_sequence A108522 A108523 A108524

nonn

Christian G. Bower (bowerc(AT)usa.net), Jun 07 2005