A254450 Number of (n+2)X(n+2) 0..1 arrays with every 3X3 subblock diagonal maximum minus antidiagonal median nondecreasing horizontally and vertically.

512, 26380, 2085712, 275772848, 71814202464, 37859718002056, 41728495959588032, 96370792918403418032, 471658574277826549969856, 4899488261874299641047185592, 107824890536438862557050692197760

Offset: 1

Author

R. H. Hardin, Jan 30 2015

Keywords

• nonn

Comments

Diagonal of A254457

Examples

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