A265092 Number of n X n arrays containing n copies of 0..n-1 with row sums equal and column sums equal.

1, 2, 12, 4464, 75502080

Offset: 1

Author

R. H. Hardin, Dec 01 2015

Keywords

• nonn
• more

Comments

Diagonal of A265089.

Cf. Latin squares A002860.

Examples

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

Crossrefs

Cf. A265089, A002860.