Number of forests with n nodes and height at most 2.

A000949

Number of forests with n nodes and height at most 2.

Terms

    a(0) =1a(1) =1a(2) =3a(3) =16a(4) =101a(5) =756a(6) =6607a(7) =65794a(8) =733833a(9) =9046648a(10) =121961051a(11) =1782690174a(12) =28055070397a(13) =472594822324

External references