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Number of nX9 binary arrays with an element zero only if there are an even number of ones to its left and an even number of ones above it
1

%I #5 Mar 31 2012 12:35:50

%S 89,1097,28959,498825,10288475,190243099,3674032121,68795107993,

%T 1301324910599,24374459510955,457521652409443,8556633331945529,

%U 160077250226203655,2989991870865523923,55846494235069318769

%N Number of nX9 binary arrays with an element zero only if there are an even number of ones to its left and an even number of ones above it

%C Column 9 of A183322

%H R. H. Hardin, <a href="/A183321/b183321.txt">Table of n, a(n) for n = 1..200</a>

%e Some solutions for 5X9

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 03 2011