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A076328
Number of connected 9-colorable (i.e., chromatic number <= 9) simple graphs on n nodes.
7
1, 1, 2, 6, 21, 112, 853, 11117, 261080, 11716570, 1006700555
(list; graph; refs; listen; history; text; internal format)
OFFSET
1,3
LINKS
Table of n, a(n) for n=1..11.
Eric Weisstein's World of Mathematics, n-Colorable Graph
FORMULA
Inverse Euler transform of A076321. - Andrew Howroyd, Dec 02 2018
CROSSREFS
Cf. A005142, A076322, A076323, A076324, A076325, A076326, A076327.
Cf. A205568, A076321, A084269.
Cf. A001349. [R. J. Mathar, Sep 21 2008]
Sequence in context: A076326 A076327 A128527 * A128528 A001349 A126060
Adjacent sequences: A076325 A076326 A076327 * A076329 A076330 A076331
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 May 21 18:11 EDT 2026. Contains 395802 sequences.
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