A220937 - OEIS

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A220937

Equals two maps: number of 3Xn binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal and antidiagonal neighbors in a random 0..2 3Xn array

1, 12, 92, 673, 5912, 48212, 395844, 3232729, 26184472, 211363254 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,2`
	COMMENTS	`Row 3 of A220935`
	LINKS	`Table of n, a(n) for n=1..10.`
	EXAMPLE	`Some solutions for n=3` `..0..0..1....0..0..1....0..0..1....0..1..1....0..1..1....0..0..0....0..1..0` `..0..0..1....1..0..0....1..0..1....0..1..1....0..0..0....0..1..0....1..0..0` `..1..1..0....0..1..0....0..0..0....0..0..0....0..0..0....0..1..0....0..1..0`
	CROSSREFS	`Sequence in context: A120990 A220330 A055022 * A221291 A044263 A044644` `Adjacent sequences: A220934 A220935 A220936 * A220938 A220939 A220940`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin Dec 25 2012`
	STATUS	`approved`

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Last modified March 31 04:34 EDT 2023. Contains 361627 sequences. (Running on oeis4.)