Number of simple unlabeled n-node graphs with 3 center nodes.

A052439

Number of simple unlabeled n-node graphs with 3 center nodes.

Terms

    a(0) =0a(1) =0a(2) =3a(3) =0a(4) =4a(5) =18a(6) =119a(7) =1055a(8) =17297a(9) =486446a(10) =24269709a(11) =2095669951

External references