A047943 - OEIS

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A047943

Number of 8-colorings of an n X n grid, up to rotational symmetry.

1, 8, 1044, 33562880, 70368748374016, 9444732965876730429440, 81129638414606686199388699623424, 44601490397061246283080881278262737180295168 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,2`
	FORMULA	`a(n) = (m^(n^2) + 2 m^((n^2 + 3 (n mod 2))/4) + m^((n^2 + (n mod 2))/2))/4, with m = 8`
	CROSSREFS	`Cf. A047937-A047945.` `Sequence in context: A076688 A004808 A176372 * A089672 A003767 A117084` `Adjacent sequences: A047940 A047941 A047942 * A047944 A047945 A047946`
	KEYWORD	`nonn`
	AUTHOR	`Robert W. Pratt (Rob.Pratt(AT)sas.com)`

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Last modified February 17 15:54 EST 2012. Contains 206050 sequences.