%I #4 Feb 27 2013 08:40:23

%S 4,12,61,457,3411,31487,317655,3161392,31436637,315944445,3182997999,

%T 32059374557,323386403994,3267568146811,33053624461081,

%U 334704837151091,3392894959638835,34428005433287948,349661755820884825

%N Number of nX4 0..2 arrays with no more than floor(nX4/2) elements unequal to at least one horizontal, vertical or antidiagonal neighbor, with new values introduced in row major 0..2 order

%C Column 4 of A222649

%H R. H. Hardin, <a href="/A222645/b222645.txt">Table of n, a(n) for n = 1..128</a>

%e Some solutions for n=3

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

%e ..0..0..0..2....0..1..1..1....2..0..0..0....1..1..1..1....0..1..1..1

%e ..0..0..2..2....1..1..1..1....0..0..0..0....2..1..1..1....2..1..1..1

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 27 2013