Triangle of the numbers of different forests of m rooted trees of smallest order 2, i.e., without isolated vertices, on N labeled nodes.
A105819
Triangle of the numbers of different forests of m rooted trees of smallest order 2, i.e., without isolated vertices, on N labeled nodes.
Terms
- a(0) =0a(1) =2a(2) =0a(3) =9a(4) =0a(5) =0a(6) =64a(7) =12a(8) =0a(9) =0a(10) =625a(11) =180a(12) =0a(13) =0a(14) =0a(15) =7776a(16) =2730a(17) =120a(18) =0a(19) =0a(20) =0a(21) =117649a(22) =46410a(23) =3780a(24) =0a(25) =0a(26) =0a(27) =0a(28) =2097152a(29) =893816
External references
- oeis: A105819