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A188407 Number of (6*n)Xn binary arrays with rows in nonincreasing order, 6 ones in every column and no more than 3 ones in any row 0
1, 7, 106, 3616, 222190, 22393101, 3444274966, 767013376954, 237357745294502 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Row 6 of A188403

LINKS

Table of n, a(n) for n=1..9.

EXAMPLE

All solutions for 12X2

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

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

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

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

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

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

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

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

CROSSREFS

Sequence in context: A141362 A213863 A231899 * A075021 A138963 A141932

Adjacent sequences:  A188404 A188405 A188406 * A188408 A188409 A188410

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 30 2011

STATUS

approved

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Last modified June 17 17:07 EDT 2019. Contains 324196 sequences. (Running on oeis4.)