A188712 - OEIS

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A188712

Number of 8Xn binary arrays without the pattern 0 0 diagonally or vertically

55, 1681, 54049, 1729531, 55337580, 1769780565, 56585607231, 1808994829500, 57829148027161, 1848624216954643, 59094629276262316, 1889063777872100973, 60387214464117233335, 1930382199629976832828, 61708017083116822627729 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,1`
	COMMENTS	`Row 8 of A188706`
	LINKS	`R. H. Hardin, Table of n, a(n) for n = 1..200`
	FORMULA	`Empirical: a(n) = 55a(n-1) -933a(n-2) +7094a(n-3) -27502a(n-4) +57434a(n-5) -65257a(n-6) +38535a(n-7) -10341a(n-8) +900*a(n-9) for n>11`
	EXAMPLE	`Some solutions for 8X3` `..1..1..0....0..1..1....1..1..1....0..1..1....1..1..0....0..0..1....0..1..0` `..1..1..1....1..1..0....0..0..0....1..1..0....1..0..1....1..1..1....1..1..1` `..1..0..0....1..1..1....1..1..1....1..1..1....0..1..1....0..1..0....0..0..1` `..1..1..1....1..0..1....0..1..0....0..0..1....1..1..1....1..1..1....1..1..1` `..1..0..0....0..1..1....1..1..1....1..1..1....0..1..1....1..0..0....1..1..1` `..1..1..1....1..1..1....1..1..1....1..0..1....1..1..0....1..1..1....1..1..1` `..1..0..1....0..1..1....1..1..1....1..1..1....1..0..1....0..0..0....1..1..1` `..0..1..1....1..1..0....1..0..1....0..1..1....0..1..1....1..1..1....1..0..0`
	CROSSREFS	`Sequence in context: A173113 A166844 A077688 * A049435 A327511 A215770` `Adjacent sequences: A188709 A188710 A188711 * A188713 A188714 A188715`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin Apr 08 2011`
	STATUS	`approved`

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Last modified March 30 11:12 EDT 2023. Contains 361610 sequences. (Running on oeis4.)