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A076320 Number of 8-colorable (i.e., chromatic number <= 8) simple graphs on n nodes. 8
1, 2, 4, 11, 34, 156, 1044, 12346, 274667, 12005158, 1018997631 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

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

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

FORMULA

a(n) = A076319(n) + A205567(n). - Andrew Howroyd, Dec 02 2018

CROSSREFS

Cf. A033995, A076315, A076316, A076317, A076318, A076319, A076321, A205567.

Sequence in context: A046750 A076319 A178944 * A076321 A000088 A071794

Adjacent sequences:  A076317 A076318 A076319 * A076321 A076322 A076323

KEYWORD

nonn,more

AUTHOR

Eric W. Weisstein, Oct 06 2002

EXTENSIONS

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

STATUS

approved

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Last modified January 15 20:47 EST 2019. Contains 319184 sequences. (Running on oeis4.)