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A076325
Number of connected 6-colorable (i.e., chromatic number <= 6) simple graphs on n nodes.
7
1, 1, 2, 6, 21, 112, 852, 11110, 260962, 11712281, 1006302720
OFFSET
1,3
LINKS
Eric Weisstein's World of Mathematics, n-Colorable Graph
FORMULA
Inverse Euler transform of A076318. - Andrew Howroyd, Dec 02 2018
KEYWORD
nonn,more
AUTHOR
Eric W. Weisstein, Oct 06 2002
EXTENSIONS
a(10)-a(11) from Andrew Howroyd, Dec 02 2018
STATUS
approved