A076283 Number of 7-chromatic (i.e., chromatic number equals 7) simple graphs on n nodes.

0, 0, 0, 0, 0, 0, 1, 7, 118, 4251, 393963

Offset

1,8

Links

Table of n, a(n) for n=1..11.

Eric Weisstein's World of Mathematics, n-Chromatic Graph

Crossrefs

Column k=7 of A084268.

Cf. A076278, A076279, A076280, A076281, A076282.

Sequence in context: A376035 A266482 A368631 * A057769 A221031 A221323

Adjacent sequences: A076280 A076281 A076282 * A076284 A076285 A076286

Keyword

nonn,more

Author

Eric W. Weisstein, Oct 06 2002

Extensions

a(10)-a(11) from Michael Sollami, Jan 28 2012

Status

approved