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%I #5 Dec 18 2015 18:18:14
%S 4,28,2936,851332,1661620524,15513264742256
%N Number of n X n arrays of the minimum value of corresponding elements and their horizontal and vertical neighbors in a random 0..3 n X n array
%C Diagonal of A218181
%e Some solutions for n=3
%e ..0..0..1....3..1..2....2..2..3....3..3..3....0..0..2....3..0..0....0..0..2
%e ..0..0..0....0..1..1....1..0..0....0..3..2....0..0..2....2..1..0....0..2..2
%e ..3..0..2....0..0..1....0..0..0....0..0..2....0..2..3....2..0..0....1..1..2
%K nonn
%O 1,1
%A _R. H. Hardin_ Oct 22 2012