Number of weakly connected acyclic digraphs with n arcs.
A350451
Number of weakly connected acyclic digraphs with n arcs.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =9a(4) =36a(5) =151a(6) =750a(7) =3959a(8) =22857a(9) =140031a(10) =909388a(11) =6202031a(12) =44256875a(13) =328994157a(14) =2540242646a(15) =20317980102a(16) =167980915848
External references
- oeis: A350451