Triangle of the numbers of different forests of m rooted trees of smallest order 2, i.e., without isolated vertices.
A106235
Triangle of the numbers of different forests of m rooted trees of smallest order 2, i.e., without isolated vertices.
Terms
- a(0) =0a(1) =1a(2) =0a(3) =2a(4) =0a(5) =0a(6) =4a(7) =1a(8) =0a(9) =0a(10) =9a(11) =2a(12) =0a(13) =0a(14) =0a(15) =20a(16) =7a(17) =1a(18) =0a(19) =0a(20) =0a(21) =48a(22) =17a(23) =2a(24) =0a(25) =0a(26) =0a(27) =0a(28) =115a(29) =48
External references
- oeis: A106235