A188446 - OEIS

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A188446

Number of (4*n)Xn binary arrays with nonzero rows in decreasing order and 4 ones in every column

0, 0, 1, 278, 67198, 24537905, 13744869502, 11385203921707 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,4`
	COMMENTS	`Row 4 of A188445`
	LINKS	`Table of n, a(n) for n=1..8.`
	EXAMPLE	`Some solutions for 16X4` `..1..1..1..0....1..1..1..1....1..1..1..1....1..1..1..1....1..1..1..0` `..1..1..0..1....1..0..1..0....1..1..1..0....1..1..1..0....1..1..0..0` `..1..0..1..0....1..0..0..1....1..0..1..1....1..0..1..0....1..0..1..1` `..1..0..0..1....1..0..0..0....1..0..0..0....1..0..0..1....1..0..0..1` `..0..1..1..0....0..1..1..1....0..1..0..1....0..1..0..1....0..1..1..0` `..0..1..0..1....0..1..1..0....0..1..0..0....0..1..0..0....0..1..0..1` `..0..0..1..1....0..1..0..0....0..0..1..1....0..0..1..0....0..0..1..0` `..0..0..0..0....0..0..0..1....0..0..0..0....0..0..0..1....0..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..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..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..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` `..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..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..0..0....0..0..0..0....0..0..0..0`
	CROSSREFS	`Sequence in context: A189609 A154231 A056995 * A062384 A053345 A032505` `Adjacent sequences: A188443 A188444 A188445 * A188447 A188448 A188449`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin Mar 31 2011`
	STATUS	`approved`

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Last modified May 22 20:46 EDT 2013. Contains 225583 sequences.