A014398 Number of loopless multigraphs with 8 nodes and n edges.

1, 1, 3, 8, 23, 64, 197, 588, 1806, 5509, 16677, 49505, 143761, 406091, 1114890, 2970964, 7685972, 19311709, 47170674, 112123118, 259662333, 586583731, 1294143065, 2791716176, 5895027869, 12198014683, 24758285639, 49339306519

Offset: 0

Author

N. J. A. Sloane

Keywords

• nonn

References

• CRC Handbook of Combinatorial Designs, 1996, p. 650.
• F. Harary and E. M. Palmer, Graphical Enumeration, Academic Press, NY, 1973, p. 88, (4.1.18).

Links

• Andrew Howroyd, Table of n, a(n) for n = 0..1000

Crossrefs

Row 8 of A192517.

Cf. A001399, A003082, A014395, A014396, A014397.

Programs

PARI

concat([1], G(8, 30)) \\ See A191646 for G. - Andrew Howroyd, Mar 15 2020

Extensions

More terms and better description from Vladeta Jovovic, Dec 29 1999