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A184142 Number of nX7 binary arrays with rows and columns in nondecreasing order 1
8, 92, 1682, 42305, 1202234, 33345183, 836488618, 18470742266, 358194085968, 6148026957098, 94402700488339, 1310734458313359, 16616390002366515, 193963806947349704, 2100034143080950846, 21221195503865955621 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A180985

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..200

EXAMPLE

Some solutions for 3X7

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

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

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

CROSSREFS

Sequence in context: A081624 A298188 A299083 * A137159 A099291 A087579

Adjacent sequences:  A184139 A184140 A184141 * A184143 A184144 A184145

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 09 2011

STATUS

approved

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Last modified April 23 03:26 EDT 2019. Contains 322380 sequences. (Running on oeis4.)