Number of extensional acyclic digraphs on n labeled nodes.
A182161
Number of extensional acyclic digraphs on n labeled nodes.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =12a(4) =216a(5) =10560a(6) =1297440a(7) =381013920a(8) =258918871680
External references
- oeis: A182161