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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 0
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

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Last modified August 16 07:50 EDT 2022. Contains 356160 sequences. (Running on oeis4.)