A145253 - OEIS

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A145253

1/8 of the number of 8-colorings of an n X n array symmetric under 180 degree rotation.

1, 7, 1855, 488509, 4884669475, 48533789554789, 18312348548135120059 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,2`
	CROSSREFS	`Sequence in context: A206459 A172937 A185407 * A024099 A056235 A139299` `Adjacent sequences: A145250 A145251 A145252 * A145254 A145255 A145256`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin (rhhardin(AT)att.net), Oct 05 2008`

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Last modified February 15 10:28 EST 2012. Contains 205763 sequences.