Number of unlabeled strongly connected oriented graphs with n arcs.

A350751

Number of unlabeled strongly connected oriented graphs with n arcs.

Terms

    a(0) =1a(1) =0a(2) =0a(3) =1a(4) =1a(5) =3a(6) =7a(7) =27a(8) =120a(9) =590a(10) =3172a(11) =18291a(12) =112597a(13) =731646a(14) =5002261a(15) =35805035a(16) =267427870a(17) =2077890719a(18) =16753007782a(19) =139843832074

External references