Number of labeled graphs on n nodes with two connected components.

A323875

Number of labeled graphs on n nodes with two connected components.

Terms

    a(0) =0a(1) =1a(2) =3a(3) =19a(4) =230a(5) =5098a(6) =207536a(7) =15891372a(8) =2343580752a(9) =675458276144

External references