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%I #4 Feb 28 2013 06:54:37
%S 3,9,44,452,4241,62406,1058776,17374571,288771291,4860565711,
%T 81668904553,1371394427050,23054727857828,387744337542770,
%U 6522573483253608,109759232573531088,1847613631016545713,31110964472846965874
%N Number of nX4 0..3 arrays with exactly floor(nX4/2) elements unequal to at least one horizontal, vertical or antidiagonal neighbor, with new values introduced in row major 0..3 order
%C Column 4 of A222666
%H R. H. Hardin, <a href="/A222662/b222662.txt">Table of n, a(n) for n = 1..87</a>
%e Some solutions for n=3
%e ..0..0..1..1....0..0..0..0....0..0..0..1....0..1..1..1....0..0..0..1
%e ..0..1..1..1....0..0..0..0....0..0..1..1....1..1..1..1....0..0..0..2
%e ..2..1..1..1....1..1..0..0....0..1..1..1....0..1..1..1....0..0..0..0
%K nonn
%O 1,1
%A _R. H. Hardin_ Feb 28 2013
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