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%I #5 Aug 11 2014 22:45:54
%S 0,129,1971,73857,2432241,82359177,2770525761,93340154655,
%T 3143682463065,105885454704267,3566387657985771,120121801796361177,
%U 4045897974546191799,136272446957010253599,4589878342395006746985,154594591461184687863333
%N Number of 4Xn 0..2 arrays x(i,j) with each element horizontally or antidiagonally next to at least one element with value 2-x(i,j)
%C Row 4 of A230184
%H R. H. Hardin, <a href="/A230187/b230187.txt">Table of n, a(n) for n = 1..210</a>
%H R. H. Hardin, <a href="/A230187/a230187.txt">Empirical recurrence of order 93</a>
%F Empirical recurrence of order 93 (see link above)
%e Some solutions for n=3
%e ..2..0..1....2..0..1....2..0..0....1..1..1....2..0..2....2..0..2....1..1..1
%e ..1..1..2....1..1..2....2..2..0....0..2..0....0..2..2....2..2..0....1..0..2
%e ..2..0..2....1..0..2....2..0..0....1..1..0....0..0..2....2..0..0....2..1..1
%e ..2..0..2....2..0..2....2..2..0....1..2..0....2..0..2....2..2..0....1..2..0
%K nonn
%O 1,2
%A _R. H. Hardin_, Oct 11 2013