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%I #4 Feb 14 2013 05:27:48
%S 0,0,4,13,40,162,888,3617,18136,81560,407644,1901375,9349056,44712494,
%T 218395880,1057844425,5154076928,25146813236,122532346416,
%U 600293886818,2928771248408,14383619678744,70298507431888,345790800489643
%N Number of nX2 0..3 arrays with exactly floor(nX2/2) elements unequal to at least one horizontal or vertical neighbor, with new values introduced in row major 0..3 order
%C Column 2 of A222275
%H R. H. Hardin, <a href="/A222270/b222270.txt">Table of n, a(n) for n = 1..210</a>
%e All solutions for n=3
%e ..0..1....0..0....0..1....0..0
%e ..1..1....0..0....0..0....0..0
%e ..1..1....1..0....0..0....0..1
%K nonn
%O 1,3
%A _R. H. Hardin_ Feb 14 2013
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