A217638 Number of n X n arrays of the minimum value of corresponding elements and their horizontal, vertical or antidiagonal neighbors in a random 0..2 n X n array.

3, 9, 163, 8363, 1348399, 644993621, 912173011699, 3856478543303029, 48316904515484808101, 1799376234322670301407483

Offset: 1

Author

R. H. Hardin Oct 09 2012

Keywords

• nonn

Comments

Diagonal of A217645

Examples

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