A205568 Number of 9-chromatic (i.e., chromatic number equals 9) simple graphs on n nodes.

0, 0, 0, 0, 0, 0, 0, 0, 1, 9, 222

Offset: 1

Author

Michael Sollami, Jan 28 2012

Keywords

• nonn
• more

Links

• Keith M. Briggs, Combinatorial Graph Theory
• Eric Weisstein's World of Mathematics, n-Chromatic Graph

Crossrefs

Column k=9 of A084268.

Cf. A076278, A076279, A076281, A076282.