%I #4 Oct 25 2013 13:05:39

%S 0,0,0,44916,4899200,570014364,62312057642,6859445695566,

%T 753992937156292,82884961506928674,9111820198577944474,

%U 1001675666375464430008,110115929289424892845128,12105240130837251432416920

%N Number of 6Xn 0..2 arrays x(i,j) with each element horizontally or antidiagonally next to at least one element with value (x(i,j)+1) mod 3, and upper left element zero

%C Row 6 of A230614

%H R. H. Hardin, <a href="/A230618/b230618.txt">Table of n, a(n) for n = 1..124</a>

%e Some solutions for n=4

%e ..0..1..2..1....0..1..2..0....0..1..2..0....0..1..2..0....0..1..1..2

%e ..2..0..2..0....0..2..1..0....0..1..1..2....0..1..1..2....2..0..0..2

%e ..1..2..1..0....2..0..2..1....1..2..0..1....1..2..0..1....0..1..2..0

%e ..0..1..2..1....2..0..2..1....1..0..2..1....1..0..2..2....0..1..1..0

%e ..1..2..0..1....1..2..0..2....1..2..0..0....0..1..0..0....0..2..1..1

%e ..1..0..2..1....1..0..1..0....1..2..1..0....1..2..1..0....2..0..2..1

%K nonn

%O 1,4

%A _R. H. Hardin_, Oct 25 2013