A202712 Number of n X n 0..2 arrays with row sums equal and no column sum equal to the previous.

3, 10, 624, 173860, 421158558, 8496020082856

Offset: 1

Author

R. H. Hardin Dec 23 2011

Keywords

• nonn

Comments

Column 2 of A202714

Examples

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