A202648 Number of n X n 0..1 arrays with no row or column sum equal to the previous.

2, 8, 126, 10016, 3648810, 5616280768, 35610018145138

Offset: 1

Author

R. H. Hardin Dec 22 2011

Keywords

• nonn

Comments

Column 1 of A202651

Examples

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