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A188394 Number of (8*n)Xn binary arrays with rows in nonincreasing order and 8 ones in every column 0
1, 9, 625, 411180, 2067951459, 56145844958803 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Row 8 of A188392

LINKS

Table of n, a(n) for n=1..6.

EXAMPLE

All solutions for 16X2

..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..1....1..0....1..0....1..0....1..1....1..1....1..1....1..1

..1..1....1..1....1..0....1..0....1..0....1..1....1..1....1..0....1..1

..1..1....1..1....1..0....1..0....1..0....1..1....1..0....1..0....1..1

..1..1....1..0....1..0....1..0....1..0....1..1....1..0....1..0....1..1

..1..1....1..0....1..0....1..0....1..0....1..0....1..0....1..0....1..1

..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..1....0..1....0..1....0..0

..0..0....0..1....0..1....0..1....0..1....0..0....0..1....0..1....0..0

..0..0....0..0....0..1....0..1....0..1....0..0....0..1....0..1....0..0

..0..0....0..0....0..1....0..1....0..1....0..0....0..0....0..1....0..0

..0..0....0..0....0..1....0..1....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....0..0....0..0

CROSSREFS

Sequence in context: A085530 A188423 A158881 * A157597 A211611 A280904

Adjacent sequences:  A188391 A188392 A188393 * A188395 A188396 A188397

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 30 2011

STATUS

approved

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Last modified October 15 05:56 EDT 2018. Contains 316202 sequences. (Running on oeis4.)