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%I #4 Mar 06 2013 11:39:29
%S 6,613,114782,23567385,5026137016,1093286140097,240791286159691,
%T 53509887603503644,11973329684485913722,2693909098107381431482,
%U 608845475416039463267176,138122543896575176671661121
%N Number of nX4 0..3 arrays with exactly floor(nX4/2) elements equal to at least one horizontal or vertical neighbor, with new values introduced in row major 0..3 order
%C Column 4 of A222832
%H R. H. Hardin, <a href="/A222831/b222831.txt">Table of n, a(n) for n = 1..19</a>
%e Some solutions for n=3
%e ..0..1..2..1....0..1..1..1....0..1..0..0....0..1..1..1....0..0..1..2
%e ..1..3..2..0....2..1..0..3....2..3..3..0....1..2..1..0....2..3..0..2
%e ..1..1..2..3....3..2..0..1....0..2..3..1....3..0..0..3....0..1..2..2
%K nonn
%O 1,1
%A _R. H. Hardin_ Mar 06 2013
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