A219877 Number of n X n arrays of the minimum value of corresponding elements and their horizontal, diagonal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..2 n X n array.

3, 7, 47, 621, 14536, 764027, 113313853

Offset: 1

Author

R. H. Hardin, Nov 30 2012

Keywords

• nonn
• more

Examples

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

Crossrefs

Diagonal of A219883.