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%I #7 Mar 15 2023 11:33:11
%S 0,0,114,76518,281740616,8449174734112,1929668277796729476,
%T 3350063281301654212261806
%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 (x(i,j)+1) mod 3, and upper left element zero.
%C Diagonal of A230469.
%e Some solutions for n=3
%e ..0..1..0....0..0..2....0..0..2....0..1..0....0..1..1....0..0..2....0..1..0
%e ..0..0..2....1..1..2....0..1..1....2..0..0....2..2..0....1..1..0....0..0..2
%e ..1..2..1....0..2..0....0..2..0....1..2..2....1..0..2....0..2..1....2..2..1
%Y Cf. A230469.
%K nonn
%O 1,3
%A _R. H. Hardin_, Oct 20 2013