Number of unlabeled initially connected digraphs with n arcs.

A350907

Number of unlabeled initially connected digraphs with n arcs.

Terms

    a(0) =1a(1) =1a(2) =3a(3) =8a(4) =29a(5) =111a(6) =522a(7) =2604a(8) =14459a(9) =85796a(10) =544753a(11) =3659313a(12) =25902251a(13) =192171887a(14) =1489090036a(15) =12011329453a(16) =100583184087a(17) =872346402439

External references