Number of connected components over all simple unlabeled graphs with n nodes.

A224031

Number of connected components over all simple unlabeled graphs with n nodes.

Terms

    a(0) =0a(1) =1a(2) =3a(3) =7a(4) =19a(5) =55a(6) =222a(7) =1303a(8) =13845a(9) =289796a(10) =12309107a(11) =1031600490a(12) =166135132131

External references