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%I #7 Dec 18 2015 18:17:28
%S 2,6,43,480,11385,455509,35629548,4963103592,1301324910599,
%T 621440459491278,550719742223029437,895987628972185952650,
%U 2692063790042095644897446,14888067283069842424203964441
%N Number of n X n 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 Diagonal of A183322
%H R. H. Hardin, <a href="/A183313/b183313.txt">Table of n, a(n) for n = 1..17</a>
%e Some solutions for 6X6
%e ..0..0..0..0..0..0....0..0..0..0..0..0....1..1..0..0..0..0....0..0..0..0..0..0
%e ..0..1..1..0..0..0....0..0..0..1..1..0....1..1..0..0..0..0....0..0..0..0..0..0
%e ..0..1..1..1..1..1....1..1..0..1..1..0....0..0..0..0..0..1....0..0..0..1..1..0
%e ..1..1..0..1..1..1....1..1..1..1..0..1....1..1..0..0..0..1....0..1..1..1..1..1
%e ..1..1..1..1..1..1....1..1..1..1..1..1....1..1..0..0..0..1....1..1..1..1..1..1
%e ..0..1..1..1..1..1....1..1..0..1..1..0....1..1..1..1..1..1....1..1..0..1..1..1
%K nonn
%O 1,1
%A _R. H. Hardin_ Jan 03 2011
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