A185824 - OEIS

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A185824

1/5 the number of nX8 0..4 arrays with every element equal to exactly one or two of its horizontal and vertical neighbors

181, 3701360, 26231137608, 247462638659680, 2112817100467905536 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,1`
	COMMENTS	`Column 8 of A185825`
	LINKS	`Table of n, a(n) for n=1..5.`
	EXAMPLE	`Some solutions for 4X8 with a(1,1)=0` `..0..0..0..0..2..2..2..2....0..0..0..0..4..4..3..3....0..0..0..0..3..3..2..2` `..0..1..1..0..0..3..3..1....0..1..1..0..0..1..3..3....0..1..1..0..0..3..3..3` `..0..0..0..1..1..0..0..1....0..0..0..1..1..1..4..4....0..0..0..1..1..2..2..2` `..1..1..0..0..0..0..1..1....1..1..0..0..0..0..0..4....1..1..0..0..0..0..0..2`
	CROSSREFS	`Sequence in context: A189778 A107075 A066626 * A204378 A054985 A124185` `Adjacent sequences: A185821 A185822 A185823 * A185825 A185826 A185827`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin Feb 05 2011`
	STATUS	`approved`

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Last modified May 22 17:33 EDT 2013. Contains 225559 sequences.