A207853 - OEIS

%I #7 Dec 18 2015 18:18:02

%S 2,16,102,1369,44121,2934369,298294290,56804048896,22612514662790,

%T 17183745725983369,23510773704878179041,60748271137827940655041,

%U 304386527035085508883292036,2891218911926091087027201634564

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

%C Diagonal of A207858

%H R. H. Hardin, <a href="/A207853/b207853.txt">Table of n, a(n) for n = 1..15</a>

%e Some solutions for n=4

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 21 2012