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%I #5 Aug 12 2016 06:54:01
%S 0,6,48,906,59328,2192682,131218206,6966218352,394140187926,
%T 22353391341810
%N Number of 4Xn arrays containing n copies of 0..4-1 with every element equal to at least one horizontal or antidiagonal neighbor and the top left element equal to 0.
%C Row 4 of A267617.
%e Some solutions for n=4
%e ..0..0..2..1....0..0..1..1....0..0..1..1....0..0..2..2....0..0..2..1
%e ..2..2..1..3....2..2..0..0....2..2..2..2....1..1..3..3....2..2..1..3
%e ..2..0..3..3....1..1..2..2....3..3..0..0....0..0..2..2....2..1..3..3
%e ..0..3..1..1....3..3..3..3....1..1..3..3....3..3..1..1....1..3..0..0
%Y Cf. A267617.
%K nonn
%O 1,2
%A _R. H. Hardin_, Jan 18 2016
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