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A084286 Number of connected labeled 6-colorable (i.e., chromatic number <= 6) graphs on n nodes. 3
1, 1, 4, 38, 728, 26704, 1866255, 251547611, 66295198837, 34494681184926, 35636712584655663 (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
Logarithmic transform of A084282. - Andrew Howroyd, Dec 02 2018
CROSSREFS
Cf. A001832, A084282, A084283, A084284, A084285.
Sequence in context: A096332 A084284 A084285 * A001187 A093377 A178017
Adjacent sequences: A084283 A084284 A084285 * A084287 A084288 A084289
KEYWORD
nonn,more
AUTHOR
Eric W. Weisstein, May 25 2003
EXTENSIONS
a(7)-a(11) from Andrew Howroyd, Dec 02 2018
STATUS
approved

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Last modified June 4 17:49 EDT 2024. Contains 373102 sequences. (Running on oeis4.)