A183414 Number of n X n 0..2 arrays with each sum of a(1..i,1..j) no greater than i*j.

2, 34, 5257, 7798591, 108917015732, 14221257369534380, 17218452637947555486763

Offset: 1

Author

R. H. Hardin Jan 04 2011

Keywords

• nonn

Comments

Diagonal of A183419

Examples

			Some solutions for 4X4
..0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0
..0..0..1..2....0..1..1..1....0..0..2..1....0..1..1..1....0..0..1..2
..0..0..1..0....1..2..0..2....2..0..2..1....2..2..2..2....1..2..1..1
..1..0..2..2....1..0..2..2....0..1..1..2....0..1..1..1....0..2..2..1