A207688 - OEIS

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A207688

Number of n X n 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 1 and 1 1 1 vertically.

2, 16, 60, 256, 1872, 15376, 145200, 1887876, 32939236, 653211364, 16761239040, 557862597604, 24505820603880, 1374667445474064, 89177394083197716, 7769360160391840000, 912190244879661701508, 129010731422391263108196 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,1`
	COMMENTS	`Diagonal of A207693.`
	LINKS	`R. H. Hardin, Table of n, a(n) for n = 1..19`
	EXAMPLE	`Some solutions for n=4` `..1..1..0..1....1..1..1..0....1..1..1..1....1..1..0..1....1..0..0..1` `..1..1..1..0....1..0..0..1....0..0..1..1....0..0..1..1....0..1..1..0` `..0..0..1..1....0..1..1..0....1..1..0..0....1..1..0..0....1..0..0..1` `..1..1..0..0....1..0..1..1....1..1..0..0....0..1..1..0....0..1..1..0`
	CROSSREFS	`Cf. A207693.` `Sequence in context: A357816 A170991 A209219 * A208495 A207583 A152665` `Adjacent sequences: A207685 A207686 A207687 * A207689 A207690 A207691`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin Feb 19 2012`
	STATUS	`approved`

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Last modified December 9 19:36 EST 2022. Contains 358703 sequences. (Running on oeis4.)