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Number of nX7 0..1 arrays avoiding 0 1 0 horizontally and 1 0 1 vertically
1

%I #5 Mar 31 2012 12:37:14

%S 65,4225,105936,2276625,56006452,1455584860,37121455086,933389392995,

%T 23502259683934,593617743280100,14997131474172367,378662158472685372,

%U 9559398762581848139,241351966658699739066,6093846582029230600582

%N Number of nX7 0..1 arrays avoiding 0 1 0 horizontally and 1 0 1 vertically

%C Column 7 of A206883

%H R. H. Hardin, <a href="/A206882/b206882.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 13 2012