A188423 - OEIS

A188423

Number of (8*n)Xn binary arrays with rows in nonincreasing order, 8 ones in every column and no more than 3 ones in any row

1, 9, 625, 256901, 434626896, 2259540285524 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,2`
	COMMENTS	`Row 8 of A188416`
	LINKS	`Table of n, a(n) for n=1..6.`
	EXAMPLE	`All solutions for 16X2` `..1..1....1..1....1..1....1..1....1..1....1..1....1..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..1....1..1....1..0....1..0....1..1....1..0....1..1....1..1` `..1..1....1..0....1..1....1..0....1..0....1..1....1..0....1..1....1..1` `..1..1....1..0....1..1....1..0....1..0....1..1....1..0....1..1....1..0` `..1..1....1..0....1..0....1..0....1..0....1..1....1..0....1..1....1..0` `..1..1....1..0....1..0....1..0....1..0....1..1....1..0....1..0....1..0` `..1..1....1..0....1..0....1..0....1..0....1..0....1..0....1..0....1..0` `..0..0....0..1....0..1....0..1....0..1....0..1....0..1....0..1....0..1` `..0..0....0..1....0..1....0..1....0..1....0..0....0..1....0..1....0..1` `..0..0....0..1....0..1....0..1....0..1....0..0....0..1....0..0....0..1` `..0..0....0..1....0..0....0..1....0..1....0..0....0..1....0..0....0..1` `..0..0....0..1....0..0....0..1....0..1....0..0....0..1....0..0....0..0` `..0..0....0..0....0..0....0..1....0..1....0..0....0..1....0..0....0..0` `..0..0....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..1....0..0....0..0`
	CROSSREFS	`Sequence in context: A171703 A352276 A085530 * A158881 A188394 A157597` `Adjacent sequences: A188420 A188421 A188422 * A188424 A188425 A188426`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin Mar 30 2011`
	STATUS	`approved`

Last modified April 1 05:25 EDT 2023. Contains 361673 sequences. (Running on oeis4.)