Triangle T(n,k) read by rows: T(n,k) is the number of rooted hypertrees on n labeled vertices with k hyperedges, n >= 2, k >= 1.
A210586
Triangle T(n,k) read by rows: T(n,k) is the number of rooted hypertrees on n labeled vertices with k hyperedges, n >= 2, k >= 1.
Terms
- a(0) =2a(1) =3a(2) =9a(3) =4a(4) =48a(5) =64a(6) =5a(7) =175a(8) =750a(9) =625a(10) =6a(11) =540a(12) =5400a(13) =12960a(14) =7776a(15) =7a(16) =1519a(17) =30870a(18) =156065a(19) =252105a(20) =117649a(21) =8a(22) =4032a(23) =154112a(24) =1433600a(25) =4587520a(26) =5505024a(27) =2097152a(28) =9a(29) =10287
External references
- oeis: A210586