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%I #4 Nov 03 2013 06:18:22
%S 0,10162,2049324,1740086452,1050541512334,688099769580280,
%T 441589771066454894,284877908767181431748,183540635813549508209004,
%U 118290502618097762855637884,76230841327679401437205021568
%N Number of nX7 0..2 arrays x(i,j) with each element horizontally, vertically 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 A231031
%H R. H. Hardin, <a href="/A231030/b231030.txt">Table of n, a(n) for n = 1..17</a>
%e Some solutions for n=3
%e ..0..1..0..0..1..2..2....0..1..0..0..1..2..1....0..1..0..1..0..2..0
%e ..2..1..2..2..1..0..1....2..0..2..0..2..0..2....2..0..2..1..1..1..0
%e ..0..0..1..0..2..0..2....0..1..0..1..0..0..1....1..0..2..2..0..2..1
%K nonn
%O 1,2
%A _R. H. Hardin_, Nov 03 2013
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