Number of n-node acyclic digraphs, not necessarily connected, which are squares.

A382159

Number of n-node acyclic digraphs, not necessarily connected, which are squares.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =5a(4) =17a(5) =81a(6) =600a(7) =7182a(8) =142425a(9) =4664203a(10) =4071974770

External references