A076325 Number of connected 6-colorable (i.e., chromatic number <= 6) simple graphs on n nodes.

1, 1, 2, 6, 21, 112, 852, 11110, 260962, 11712281, 1006302720

Offset: 1

Author

Eric W. Weisstein, Oct 06 2002

Keywords

• nonn
• more

Links

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

Crossrefs

Cf. A005142, A076322, A076323, A076324, A076326, A076327, A076328.

Cf. A076282, A076318, A084269, A126740.

Formula

Inverse Euler transform of A076318. - Andrew Howroyd, Dec 02 2018

Extensions

a(10)-a(11) from Andrew Howroyd, Dec 02 2018