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A188452 Number of (4*n)Xn binary arrays with nonzero rows in decreasing order, no more than 3 ones in any row and exactly 4 ones in every column 0

%I #4 Mar 31 2012 12:36:12

%S 0,0,1,139,16683,2876300,703845255,235994839738,105035943170557

%N Number of (4*n)Xn binary arrays with nonzero rows in decreasing order, no more than 3 ones in any row and exactly 4 ones in every column

%C Row 4 of A188449

%e All solutions for 12X3

%e ..1..1..1

%e ..1..1..0

%e ..1..0..1

%e ..1..0..0

%e ..0..1..1

%e ..0..1..0

%e ..0..0..1

%e ..0..0..0

%e ..0..0..0

%e ..0..0..0

%e ..0..0..0

%e ..0..0..0

%K nonn

%O 1,4

%A _R. H. Hardin_ Mar 31 2011

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Last modified September 12 20:35 EDT 2024. Contains 375854 sequences. (Running on oeis4.)