Number of preferential arrangements (or hierarchical orderings) on the connected graphs on n labeled nodes.

A136723

Number of preferential arrangements (or hierarchical orderings) on the connected graphs on n labeled nodes.

Terms

    a(0) =1a(1) =1a(2) =3a(3) =52a(4) =2850a(5) =393848a(6) =125054832a(7) =88260845008

External references