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

1,2

Comments

Diagonal of A265089.

Cf. Latin squares A002860.

Links

Table of n, a(n) for n=1..5.

Example

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.

Sequence in context: A000887 A118542 A007155 * A262032 A074200 A342104

Adjacent sequences: A265089 A265090 A265091 * A265093 A265094 A265095

Keyword

nonn,more

Author

R. H. Hardin, Dec 01 2015

Status

approved