A205353 - OEIS

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A205353

Number of (n+1)X(n+1) 0..2 arrays with every 2X2 subblock having the same number of equal diagonal or antidiagonal elements, and new values 0..2 introduced in row major order

14, 275, 12866, 1329947, 323378690, 194089073306, 288041668868162, 1037162852168747729 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,1`
	COMMENTS	`Diagonal of A205361`
	LINKS	`Table of n, a(n) for n=1..8.`
	EXAMPLE	`Some solutions for n=4` `..0..0..1..0..0....0..1..1..1..1....0..0..1..2..0....0..1..1..2..1` `..0..1..2..1..0....1..1..2..1..2....0..1..2..2..2....1..1..0..1..0` `..0..0..1..0..2....0..1..1..1..1....0..0..1..2..0....2..1..1..2..1` `..1..0..0..2..1....0..0..1..0..1....0..1..1..1..2....0..2..1..1..1` `..1..1..0..0..2....0..1..2..1..1....0..0..1..2..2....0..0..2..1..2`
	CROSSREFS	`Sequence in context: A001820 A211900 A215544 * A279113 A291099 A053101` `Adjacent sequences: A205350 A205351 A205352 * A205354 A205355 A205356`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin Jan 26 2012`
	STATUS	`approved`

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Last modified March 21 13:02 EDT 2023. Contains 361402 sequences. (Running on oeis4.)