Triangle read by rows: T(n,k) is the number of partially labeled rooted trees with n vertices, k of which are labeled, 0 <= k <= n.
A008295
Triangle read by rows: T(n,k) is the number of partially labeled rooted trees with n vertices, k of which are labeled, 0 <= k <= n.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =2a(6) =2a(7) =5a(8) =9a(9) =9a(10) =4a(11) =13a(12) =34a(13) =64a(14) =64a(15) =9a(16) =35a(17) =119a(18) =326a(19) =625a(20) =625a(21) =20a(22) =95a(23) =401a(24) =1433a(25) =4016a(26) =7776a(27) =7776a(28) =48a(29) =262
External references
- oeis: A008295