Number of noncrossing acyclic digraphs on n labeled nodes.

A246756

Number of noncrossing acyclic digraphs on n labeled nodes.

Terms

    a(0) =1a(1) =1a(2) =3a(3) =25a(4) =335a(5) =5521a(6) =101551a(7) =1998753a(8) =41188543a(9) =877423873a(10) =19166868607a(11) =427008572673

External references