Number of simple unlabeled n-node graphs of connectivity 4.

A052445

Number of simple unlabeled n-node graphs of connectivity 4.

Terms

    a(0) =0a(1) =0a(2) =0a(3) =0a(4) =1a(5) =3a(6) =21a(7) =345a(8) =13429a(9) =1109105a(10) =162318088a(11) =39460518399

External references