%I #5 Feb 26 2013 08:28:00
%S 1,1,3,12,40,149,615,2659,11641,51672,231598,1044550,4729221,21473854,
%T 97727797,445587611,2034814173,9304775285,42600153350,195249156987,
%U 895771869115,4113392176083,18904548916567,86949854091897
%N Number of nX2 0..3 arrays with no more than floor(nX2/2) elements unequal to at least one horizontal, vertical or antidiagonal neighbor, with new values introduced in row major 0..3 order
%C Column 2 of A222616
%H R. H. Hardin, <a href="/A222610/b222610.txt">Table of n, a(n) for n = 1..210</a>
%e All solutions for n=3
%e ..0..0....0..1....0..0
%e ..0..0....1..1....0..0
%e ..0..0....1..1....0..1
%K nonn
%O 1,3
%A _R. H. Hardin_ Feb 26 2013