A217997 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.

81, 6561, 531143, 43046713, 3486751263, 282429513233, 22876783667859, 1853020148203325

Offset: 1

Author

R. H. Hardin Oct 17 2012

Keywords

• nonn

Comments

Column 4 of A217999

Examples

			Some solutions for n=3
..0..0..2..1....0..0..0..1....0..0..1..2....0..2..0..0....0..0..0..2
..0..2..2..2....0..1..1..0....0..2..0..0....1..0..1..1....0..2..2..1
..2..1..0..2....0..0..2..0....0..1..1..1....1..2..2..2....0..0..2..2