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Number of 7Xn 0..1 arrays avoiding 0 0 0 horizontally and 0 0 1 vertically
1

%I #5 Mar 31 2012 12:37:15

%S 54,2916,88465,3500117,134515416,4992838052,189659424011,

%T 7170730063393,270475089293918,10224494565608260,386259141164549753,

%U 14590174277869464225,551225314435579230372,20824003807957963946688

%N Number of 7Xn 0..1 arrays avoiding 0 0 0 horizontally and 0 0 1 vertically

%C Row 7 of A207088

%H R. H. Hardin, <a href="/A207093/b207093.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

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

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

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 15 2012