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%I #4 Feb 22 2013 08:02:54
%S 0,0,4,5,14,100,152,998,2168,10768,25816,125264,303568,1457312,
%T 3658176,16964356,44394392,199079568,539372480,2352788576,6567620800,
%U 27950582336,80148609344,333551963152,979715239584,3996802471680,11991536245888
%N Number of 2Xn 0..2 arrays with exactly floor(2Xn/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..2 order
%C Row 2 of A222488
%H R. H. Hardin, <a href="/A222489/b222489.txt">Table of n, a(n) for n = 1..65</a>
%e All solutions for n=4
%e ..0..0..1..1....0..1..1..1....0..0..0..1....0..0..0..1....0..1..1..1
%e ..0..0..1..1....0..1..1..1....0..0..0..1....0..0..0..2....2..1..1..1
%K nonn
%O 1,3
%A _R. H. Hardin_ Feb 22 2013