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 A184142 Number of nX7 binary arrays with rows and columns in nondecreasing order 1

%I

%S 8,92,1682,42305,1202234,33345183,836488618,18470742266,358194085968,

%T 6148026957098,94402700488339,1310734458313359,16616390002366515,

%U 193963806947349704,2100034143080950846,21221195503865955621

%N Number of nX7 binary arrays with rows and columns in nondecreasing order

%C Column 7 of A180985

%H R. H. Hardin, <a href="/A184142/b184142.txt">Table of n, a(n) for n = 1..200</a>

%e Some solutions for 3X7

%e ..0..0..0..0..0..0..1....0..0..0..0..0..1..1....0..0..1..1..1..1..1

%e ..0..1..1..1..1..1..1....0..0..0..0..0..1..1....0..1..0..0..0..1..1

%e ..1..0..0..0..1..1..1....0..1..1..1..1..0..0....1..1..1..1..1..0..0

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 09 2011

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Last modified December 2 06:44 EST 2020. Contains 338868 sequences. (Running on oeis4.)