Number of simple graphs g on n nodes with |Aut(g)| = 2.

A075095

Number of simple graphs g on n nodes with |Aut(g)| = 2.

Terms

    a(0) =0a(1) =2a(2) =2a(3) =3a(4) =11a(5) =46a(6) =354a(7) =4431a(8) =89004a(9) =3026014a(10) =179282248a(11) =18885632962

External references