A220146 Number of n X n arrays of the minimum value of corresponding elements and their horizontal or diagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..2 n X n array.

3, 11, 77, 1174, 34959, 3057777, 822242009, 671848868714

Offset: 1

Author

R. H. Hardin Dec 06 2012

Keywords

• nonn

Comments

Diagonal of A220153

Examples

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