%I
%S 5,72,1154,28907,444555,11814919,186184618,5048458186,80664693231,
%T 2214177564958,35719743830427,988031616090509,16048574199166554,
%U 446266480581619794,7286115298409479410,203387498405308227681
%N Number of 3Xn 0..2 arrays with no more than floor(3Xn/2) elements equal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..2 order
%C Row 3 of A223126
%H R. H. Hardin, <a href="/A223128/b223128.txt">Table of n, a(n) for n = 1..19</a>
%e Some solutions for n=3
%e ..0..1..2....0..1..0....0..0..1....0..0..1....0..1..0....0..1..2....0..1..2
%e ..2..0..1....0..1..0....2..0..2....1..2..0....2..1..2....1..0..1....2..0..1
%e ..0..0..0....2..0..2....2..1..1....1..1..2....1..2..0....2..0..1....2..1..2
%K nonn
%O 1,1
%A _R. H. Hardin_ Mar 15 2013
