Number of forests with n labeled nodes and 4 trees.
A240681
Number of forests with n labeled nodes and 4 trees.
Terms
- a(0) =1a(1) =10a(2) =105a(3) =1295a(4) =18865a(5) =320544a(6) =6258000a(7) =138437310a(8) =3428282880a(9) =94059655690
External references
- oeis: A240681