|
%I
%S 34,250,3305,31428,343035,3437801,35629548,360327392,3674032121,
%T 37171418048,376812203313,3809267878552,38525903428706,
%U 389213738128583,3932484616050161,39713438364928384,401069370226611064
%N Number of nX7 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 7 of A183322
%H R. H. Hardin, <a href="/A183319/b183319.txt">Table of n, a(n) for n = 1..200</a>
%e Some solutions for 5X7
%e ..0..0..1..1..0..0..0....0..1..1..0..0..0..0....1..1..0..0..0..0..0
%e ..1..1..1..1..0..0..0....0..1..1..0..0..0..0....1..1..0..1..1..0..0
%e ..1..1..1..1..0..0..1....1..1..0..0..0..1..1....0..0..0..1..1..0..0
%e ..0..0..1..1..1..1..1....1..1..0..0..1..1..1....1..1..0..0..0..0..0
%e ..1..1..0..0..1..1..0....0..0..0..1..1..0..1....1..1..0..1..1..0..1
%K nonn
%O 1,1
%A _R. H. Hardin_ Jan 03 2011
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