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%I #5 Aug 11 2014 22:45:54
%S 4,12,144,2494,39504,697059,12059186,208611750,3618020875,62695395092,
%T 1086528474379,18830939076263,326354520726216,5656006078698080,
%U 98023572388848494,1698833301309485989,29442258607528840471
%N Number of (n+2)X(2+2) 0..2 arrays x(i,j) with each element horizontally, vertically, diagonally or antidiagonally next to at least two elements with value (x(i,j)+1) mod 3, and upper left element zero
%C Column 2 of A230694
%H R. H. Hardin, <a href="/A230691/b230691.txt">Table of n, a(n) for n = 1..210</a>
%H R. H. Hardin, <a href="/A230691/a230691.txt">Empirical recurrence of order 94</a>
%F Empirical recurrence of order 94 (see link above)
%e Some solutions for n=3
%e ..0..2..0..2....0..1..0..1....0..2..0..2....0..1..0..1....0..2..0..2
%e ..1..1..0..1....2..1..2..2....1..1..0..1....1..2..2..2....1..1..1..0
%e ..0..2..0..2....0..1..0..1....0..2..2..0....0..2..2..0....2..1..2..1
%e ..2..1..2..2....0..2..0..0....2..2..2..1....1..0..1..1....0..0..2..0
%e ..0..1..0..1....1..2..1..2....1..0..1..0....2..0..2..0....2..1..2..1
%K nonn
%O 1,1
%A _R. H. Hardin_, Oct 27 2013