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A213415 Half the number of nX5 binary arrays with no 3X3 submatrix formed with any three rows and columns equal to J-I 0

%I #3 Jun 10 2012 22:01:17

%S 16,512,15109,407498,10142461,235950302,5190742489,109049720858,

%T 2205335209381,43210168246742,824573050113169,15390308248104818

%N Half the number of nX5 binary arrays with no 3X3 submatrix formed with any three rows and columns equal to J-I

%C Column 5 of A213418

%e Some solutions for n=4

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ and _N. J. A. Sloane_ Jun 10 2012

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Last modified April 17 23:23 EDT 2024. Contains 371767 sequences. (Running on oeis4.)