%I
%S 0,15,1173,730503,4022141121,169908632412447,55314799986833459367,
%T 140277459587738407279576815
%N Number of n X n 0..2 arrays x(i,j) with each element horizontally, diagonally or antidiagonally next to at least one element with value 2x(i,j)
%C Diagonal of A230675
%e Some solutions for n=3
%e ..2..2..0....1..1..1....1..2..0....0..1..0....1..1..0....1..1..2....2..0..1
%e ..0..0..0....0..2..2....0..1..0....1..2..1....2..2..0....1..0..0....1..1..1
%e ..2..2..2....2..0..2....0..2..0....0..1..1....0..0..0....0..2..0....2..0..2
%K nonn
%O 1,2
%A _R. H. Hardin_, Oct 27 2013
