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

A122419

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

Terms

    a(0) =1a(1) =0a(2) =1a(3) =8a(4) =93a(5) =1354a(6) =23900a(7) =496244a(8) =11855700a(9) =320428318a(10) =9667220397a(11) =322072882348

External references