A207757 - OEIS

%I #7 Dec 18 2015 18:18:01

%S 2,16,82,663,6552,56651,887114,17141340,265932767,7838599272,

%T 322656587622,9334787856534,545237703029106,50069011902134767,

%U 2724265960028933880,333854434181630056441,70233064417444890074531

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

%C Diagonal of A207762

%H R. H. Hardin, <a href="/A207757/b207757.txt">Table of n, a(n) for n = 1..18</a>

%e Some solutions for n=4

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 19 2012