A229868 Number of n X n 0..4 arrays with corresponding row and column sums equal.

5, 125, 40625, 266515625, 36821326171875, 110831249753697265625

Offset: 1

Author

R. H. Hardin, Oct 01 2013

Keywords

• nonn

Comments

Column 4 of A229870

Examples

			Some solutions for n=4
..0..0..0..1....0..0..1..1....0..0..1..0....0..0..1..0....0..0..1..0
..0..0..2..1....0..0..2..1....0..0..1..2....0..0..2..0....0..0..4..1
..1..2..4..0....2..2..3..2....1..0..2..4....0..2..2..4....1..4..0..0
..0..1..1..0....0..1..3..0....0..3..3..4....1..0..3..2....0..1..0..0