Number of simple connected graphs g on n nodes with |Aut(g)| = 4.

A241455

Number of simple connected graphs g on n nodes with |Aut(g)| = 4.

Terms

    a(0) =0a(1) =0a(2) =0a(3) =1a(4) =3a(5) =28a(6) =198a(7) =1971a(8) =29047a(9) =672516

External references