A324670 Number of simple graphs on n unlabeled nodes with minimum degree exactly 2.

0, 0, 1, 2, 8, 43, 360, 4869, 113622, 4605833, 325817259, 40350371693, 8825083057727, 3447229161054412, 2432897732375453872, 3135299553791882831175, 7445569254636418368355175, 32831169277561326131677454356, 270499962116368309216399255404116

Offset: 1

Author

Andrew Howroyd, Sep 03 2019

Keywords

• nonn

Links

• Eric Weisstein's World of Mathematics, Minimum Vertex Degree

Crossrefs

Column k=2 of A294217.

A diagonal of A263293.

Cf. A005637, A007111, A261919.

Formula

a(n) = A261919(n) - A007111(n).