Number of 2-colored labeled directed acyclic graphs on n nodes such that all black nodes are sources.
A356746
Number of 2-colored labeled directed acyclic graphs on n nodes such that all black nodes are sources.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =74a(4) =1664a(5) =90722a(6) =11756288a(7) =3544044674
External references
- oeis: A356746