A205346 - OEIS

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A205346

Number of (n+1)X(n+1) 0..3 arrays with no 2X2 subblock having the same number of equal edges as its horizontal or vertical neighbors, and new values 0..3 introduced in row major order

15, 1750, 1080457, 2423004172, 21200252524407 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,1`
	COMMENTS	`Diagonal of A205352`
	LINKS	`Table of n, a(n) for n=1..5.`
	EXAMPLE	`Some solutions for n=4` `..0..0..1..2..0....0..0..0..1..0....0..0..0..1..1....0..1..0..2..1` `..3..0..2..3..3....0..0..2..3..3....2..0..0..0..2....3..0..0..1..0` `..0..2..2..0..0....1..2..0..3..0....0..3..3..1..3....2..0..0..1..3` `..0..0..3..2..1....0..1..0..3..1....1..3..3..1..0....3..2..1..3..3` `..0..0..3..0..2....2..1..0..2..3....3..0..1..0..0....3..0..2..3..3`
	CROSSREFS	`Sequence in context: A195521 A122184 A069450 * A208868 A070862 A077730` `Adjacent sequences: A205343 A205344 A205345 * A205347 A205348 A205349`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin Jan 26 2012`
	STATUS	`approved`

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Last modified March 30 07:38 EDT 2023. Contains 361606 sequences. (Running on oeis4.)