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%I #4 Mar 04 2013 06:59:41
%S 0,685,125094,27397461,5989744766,1324592085403,294955698998860,
%T 66064733675822897,14869951771796014493,3360970838387265054462,
%U 762388660819620686155665,173472790844083347576048482
%N Number of 4Xn 0..3 arrays with exactly floor(4Xn/2) elements equal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..3 order
%C Row 4 of A222747
%H R. H. Hardin, <a href="/A222751/b222751.txt">Table of n, a(n) for n = 1..15</a>
%e Some solutions for n=3
%e ..0..1..1....0..1..1....0..1..0....0..1..1....0..1..0....0..1..1....0..1..2
%e ..1..0..2....0..2..0....1..1..1....2..1..0....2..3..3....0..1..0....1..1..0
%e ..1..1..0....3..1..2....2..0..0....0..2..0....2..1..1....1..2..1....2..1..1
%e ..1..2..3....1..2..3....1..2..1....3..0..0....3..1..1....2..0..1....3..1..2
%K nonn
%O 1,2
%A _R. H. Hardin_ Mar 04 2013