A234482 - OEIS

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A234482

Number of (n+1)X(n+1) 0..3 arrays with every 2X2 subblock having its diagonal sum differing from its antidiagonal sum by 2 (constant stress 1X1 tilings)

62, 926, 13260, 183422, 2455350, 31925284, 404043442, 4993740182, 60359720132 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,1`
	COMMENTS	`Diagonal of A234490`
	LINKS	`Table of n, a(n) for n=1..9.`
	EXAMPLE	`Some solutions for n=4` `..2..1..2..2..3....0..3..3..0..3....0..3..3..3..1....2..3..3..0..2` `..2..3..2..0..3....2..3..1..0..1....0..1..3..1..1....1..0..2..1..1` `..1..0..1..1..2....1..0..0..1..0....2..1..1..1..3....1..2..2..3..1` `..2..3..2..0..3....2..3..1..0..1....0..1..3..1..1....0..3..1..0..0` `..2..1..2..2..3....1..0..0..1..0....1..0..0..0..2....0..1..1..2..0`
	CROSSREFS	`Sequence in context: A196413 A131473 A138408 * A157499 A249235 A250564` `Adjacent sequences: A234479 A234480 A234481 * A234483 A234484 A234485`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin, Dec 26 2013`
	STATUS	`approved`

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Last modified May 24 04:59 EDT 2022. Contains 354005 sequences. (Running on oeis4.)