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%I #4 Nov 03 2013 06:42:51
%S 0,80,96882,18856728,5472540636,1844073908022,555813932009140,
%T 172121737615080530,53553780104360423648,16590812140498319525228,
%U 5145308089828626695232104,1596083784558005651501379272
%N Number of nX7 0..2 arrays x(i,j) with each element horizontally, diagonally or antidiagonally next to at least one element with value (x(i,j)+1) mod 3 and at least one element with value (x(i,j)-1) mod 3, and upper left element zero
%C Column 7 of A231037
%H R. H. Hardin, <a href="/A231036/b231036.txt">Table of n, a(n) for n = 1..14</a>
%e Some solutions for n=3
%e ..0..1..0..1..0..2..0....0..1..2..0..0..2..0....0..2..2..1..0..2..0
%e ..0..2..2..0..1..1..1....2..2..0..2..1..1..0....0..1..1..0..2..1..1
%e ..0..1..1..0..2..0..2....1..0..1..2..1..0..2....0..2..0..2..0..0..2
%K nonn
%O 1,2
%A _R. H. Hardin_, Nov 03 2013
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