A208560 - OEIS

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A208560

Number of nXn 0..2 arrays with new values 0..2 introduced in row major order and no element equal to more than one of its immediate leftward or upward or left-upward diagonal neighbors

1, 10, 1059, 600426, 1820627588, 29489112993258, 2550050797214882163, 1177059517691274455925664, 2899898779178057927709489333244, 38132339745477816025554449167624111270 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,2`
	COMMENTS	`Diagonal of A208567`
	LINKS	`R. H. Hardin, Table of n, a(n) for n = 1..12`
	EXAMPLE	`Some solutions for n=4` `..0..0..0..1....0..0..0..0....0..0..1..2....0..0..1..2....0..1..1..0` `..1..1..1..0....1..1..1..1....0..2..2..0....2..1..0..0....1..2..2..2` `..0..2..2..2....2..2..2..2....2..0..0..1....1..2..1..1....0..1..0..1` `..0..1..0..0....0..0..0..0....2..1..2..1....2..1..2..2....2..0..1..2`
	CROSSREFS	`Sequence in context: A103623 A145184 A004810 * A190945 A054609 A119045` `Adjacent sequences: A208557 A208558 A208559 * A208561 A208562 A208563`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin Feb 28 2012`
	STATUS	`approved`

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Last modified May 22 18:04 EDT 2013. Contains 225560 sequences.