Number of labeled directed multigraphs with n arcs and with no vertex of indegree 0.

A122420

Number of labeled directed multigraphs with n arcs and with no vertex of indegree 0.

Terms

    a(0) =1a(1) =0a(2) =1a(3) =10a(4) =120a(5) =1778a(6) =31685a(7) =661940a(8) =15882128a(9) =430607370a(10) =13022755068a(11) =434697574538

External references