Number of unordered full binary trees with labels from a set of n labels.
A220452
Number of unordered full binary trees with labels from a set of n labels.
Terms
- a(0) =1a(1) =3a(2) =9a(3) =37a(4) =225a(5) =1881a(6) =19873a(7) =251889a(8) =3712257a(9) =62286625a(10) =1171487361a(11) =24402416193a(12) =557542291969
External references
- oeis: A220452