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%I #4 Mar 04 2013 06:51:23
%S 6,657,126947,27397461,6178897165,1424636571214,332960192034230,
%T 78562540663580982,18671065206165526715,4462727856303175610197,
%U 1071642436817030793550208,258331591188039785463763488
%N Number of nX4 0..3 arrays with exactly floor(nX4/2) elements equal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..3 order
%C Column 4 of A222747
%H R. H. Hardin, <a href="/A222743/b222743.txt">Table of n, a(n) for n = 1..99</a>
%e Some solutions for n=3
%e ..0..0..1..0....0..1..1..0....0..1..1..2....0..1..2..2....0..0..1..2
%e ..2..0..0..1....2..0..1..3....3..3..1..1....0..0..3..1....2..0..0..2
%e ..2..0..3..2....2..2..1..1....1..0..2..0....2..1..3..3....0..0..1..0
%K nonn
%O 1,1
%A _R. H. Hardin_ Mar 04 2013