Number of acyclic digraphs (or DAGs) on n unlabeled vertices with one source and one sink.
A345258
Number of acyclic digraphs (or DAGs) on n unlabeled vertices with one source and one sink.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =10a(4) =98a(5) =1960a(6) =80176a(7) =6686760a(8) =1129588960a(9) =384610774696
External references
- oeis: A345258