Number of acyclic digraphs on n labeled nodes with one source and one sink.

A165950

Number of acyclic digraphs on n labeled nodes with one source and one sink.

Terms

    a(0) =1a(1) =2a(2) =12a(3) =216a(4) =10600a(5) =1306620a(6) =384471444a(7) =261548825328

External references