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

0,3

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

Prog

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

Crossrefs

Row 8 of A192517.

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

Sequence in context: A017929 A017930 A305561 * A176880 A078054 A018043

Adjacent sequences: A014395 A014396 A014397 * A014399 A014400 A014401

Keyword

nonn

Author

N. J. A. Sloane

Extensions

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

Status

approved