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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
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 * A358888 A137159 A356669
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 09 2011
STATUS
approved

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Last modified March 28 12:26 EDT 2024. Contains 371254 sequences. (Running on oeis4.)