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Number of nX4 arrays of the minimum or maximum value of corresponding elements and their horizontal and vertical neighbors in a random 0..2 nX4 array
0

%I #3 Oct 17 2012 12:46:09

%S 81,6561,531143,43046713,3486751263,282429513233,22876783667859,

%T 1853020148203325

%N Number of nX4 arrays of the minimum or maximum value of corresponding elements and their horizontal and vertical neighbors in a random 0..2 nX4 array

%C Column 4 of A217999

%e Some solutions for n=3

%e ..0..0..2..1....0..0..0..1....0..0..1..2....0..2..0..0....0..0..0..2

%e ..0..2..2..2....0..1..1..0....0..2..0..0....1..0..1..1....0..2..2..1

%e ..2..1..0..2....0..0..2..0....0..1..1..1....1..2..2..2....0..0..2..2

%K nonn

%O 1,1

%A _R. H. Hardin_ Oct 17 2012