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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 November 15 10:46 EST 2019. Contains 329144 sequences. (Running on oeis4.)