A260833 - OEIS

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A260833

Number of (n+2)X(n+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000011 or 00010101

48, 131, 700, 2235, 3828, 19718, 80516, 181176, 766388, 3885356, 12122540, 43330160, 229463444, 972300920, 3559612500, 17890822312, 91527500980 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,1`
	COMMENTS	`Diagonal of A260841`
	LINKS	`Table of n, a(n) for n=1..17.`
	EXAMPLE	`Some solutions for n=4` `..0..0..0..0..0..0....0..1..0..0..0..1....0..0..0..0..1..1....0..0..0..0..0..0` `..1..0..0..1..1..0....0..1..0..0..1..1....1..1..0..0..1..0....0..0..0..0..1..0` `..0..0..0..0..0..0....0..0..0..0..0..0....0..0..0..0..0..0....1..1..0..0..1..0` `..0..0..0..0..0..0....0..0..0..0..0..0....0..0..0..0..0..0....0..0..0..0..0..0` `..1..1..0..0..1..0....0..1..0..0..1..0....0..1..0..0..1..0....0..0..0..0..0..0` `..0..0..0..0..1..0....0..1..0..0..0..1....1..1..0..0..1..1....1..0..0..1..1..0`
	CROSSREFS	`Cf. A260841` `Sequence in context: A211500 A295428 A118145 * A260972 A244380 A260493` `Adjacent sequences: A260830 A260831 A260832 * A260834 A260835 A260836`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin, Aug 01 2015`
	STATUS	`approved`

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Last modified March 23 03:46 EDT 2023. Contains 361434 sequences. (Running on oeis4.)