A325115 Number of simple graphs on n unlabeled nodes with exactly 1 endpoint (node of degree 1).

0, 0, 0, 1, 6, 35, 260, 2934, 53768, 1707627, 96648020, 9886429142, 1842161884708, 629505254017556, 397043155634566696, 464930596621838689900, 1016021072554513545893264, 4162479064042009639168386134, 32096876145378032622994745784856

Offset: 1

Author

Andrew Howroyd, Sep 04 2019

Keywords

• nonn

Links

• Andrew Howroyd, Table of n, a(n) for n = 1..50

Crossrefs

Column k=1 of A327371.

Cf. A277072 (labeled case), A325125.

Extensions

Terms a(11) and beyond from Andrew Howroyd, Feb 02 2021