%I #7 Dec 18 2015 18:18:01
%S 2,16,114,1849,86355,9259849,2215586241,1207251562500,
%T 1504250577851460,4240840118917220289,26956572348445823078057,
%U 387211891430119861291459849,12581321412478916326490284012715,923581786817019708657060682986420624
%N Number of n X n 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 1 and 1 0 0 vertically
%C Diagonal of A207741
%H R. H. Hardin, <a href="/A207736/b207736.txt">Table of n, a(n) for n = 1..18</a>
%e Some solutions for n=4
%e ..1..0..0..1....1..1..0..1....0..1..1..0....1..1..0..1....1..1..1..0
%e ..1..0..1..1....0..0..1..1....0..1..1..1....0..1..1..1....1..0..1..1
%e ..0..0..1..1....1..1..1..1....0..0..1..1....1..0..0..1....1..1..0..0
%e ..1..0..0..1....1..0..1..1....0..1..1..0....0..1..1..1....1..1..1..1
%K nonn
%O 1,1
%A _R. H. Hardin_ Feb 19 2012