A084286 Number of connected labeled 6-colorable (i.e., chromatic number <= 6) graphs on n nodes.

1, 1, 4, 38, 728, 26704, 1866255, 251547611, 66295198837, 34494681184926, 35636712584655663

Offset: 1

Author

Eric W. Weisstein, May 25 2003

Keywords

• nonn
• more

Links

• Eric Weisstein's World of Mathematics, n-Colorable Graph

Crossrefs

Cf. A001832, A084282, A084283, A084284, A084285.

Formula

Logarithmic transform of A084282. - Andrew Howroyd, Dec 02 2018

Extensions

a(7)-a(11) from Andrew Howroyd, Dec 02 2018