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%I
%S 14,1094,79092,5800644,424785708,31112194860,2278687944204,
%T 166893600277548,12223468411103052,895260103173464940,
%U 65569822288888377996,4802404999579303113900,351733358040572021645772
%N Number of 4Xn 0..2 arrays with new values 0..2 introduced in row major order and no element equal to more than two of its immediate leftward or upward or right-upward antidiagonal neighbors
%C Row 4 of A208392
%H R. H. Hardin, <a href="/A208395/b208395.txt">Table of n, a(n) for n = 1..210</a>
%F Empirical: a(n) = 61*a(n-1) +868*a(n-2) +2200*a(n-3) -7744*a(n-4) -17728*a(n-5) +40704*a(n-6) -13824*a(n-7) for n>9
%e Some solutions for n=4
%e ..0..1..0..2....0..1..2..1....0..0..1..2....0..0..0..0....0..1..2..1
%e ..1..1..1..2....2..2..1..2....2..1..0..0....1..1..0..2....2..2..0..0
%e ..1..2..2..1....0..2..2..2....1..1..1..0....2..0..1..0....0..2..2..0
%e ..1..1..0..1....0..0..2..1....2..1..2..2....1..2..0..2....0..1..0..1
%K nonn
%O 1,1
%A _R. H. Hardin_ Feb 25 2012
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