%I #5 Dec 18 2015 18:18:43
%S 0,27,3787,4722977,49754476927,4381081731832923,3274958849115023706081
%N Number of n X n 0..2 arrays x(i,j) with each element horizontally, vertically, diagonally or antidiagonally next to at least one element with value 2-x(i,j)
%C Diagonal of A230176
%e Some solutions for n=3
%e ..1..0..0....0..2..1....0..0..1....1..0..2....1..1..0....0..0..2....2..1..1
%e ..1..2..0....1..2..1....2..0..1....1..0..2....1..0..2....2..1..2....2..0..1
%e ..2..0..2....1..0..0....1..1..2....1..1..0....1..2..2....0..1..1....0..2..1
%K nonn
%O 1,2
%A _R. H. Hardin_, Oct 11 2013