id:A047940 - OEIS Search Results

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Number of 5-colorings of an n X n grid, up to rotational symmetry.

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1, 5, 165, 489125, 38147070625, 74505806274453125, 3637978807092666626953125, 4440892098500626236200333251953125, 135525271560688054250937420874834136962890625 (list; graph; listen)

	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 = 5`
	CROSSREFS	`Cf. A054752, A047937-A047945.` `Sequence in context: A117068 A128068 A129995 this_sequence A116629 A157234 A139986` `Adjacent sequences: A047937 A047938 A047939 this_sequence A047941 A047942 A047943`
	KEYWORD	`nonn`
	AUTHOR	`Robert W. Pratt (Rob.Pratt(AT)sas.com)`

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Last modified December 19 12:50 EST 2009. Contains 171053 sequences.

AT&T Labs Research