A265115 Number of nX3 arrays containing 3 copies of 0..n-1 with row sums equal, column sums equal and full-length antidiagonal sums equal to the short dimension sums.

1, 0, 8, 0, 16, 0, 168, 0, 1048, 0, 14814, 0, 300322, 0

Offset

1,3

Comments

Column 3 of A265117.

Links

Table of n, a(n) for n=1..14.

Example

Some solutions for n=7
..0..4..5....0..4..5....0..4..5....1..3..5....2..6..1....6..3..0....4..5..0
..5..1..3....6..2..1....5..0..4....5..2..2....1..4..4....0..4..5....0..6..3
..3..0..6....2..3..4....4..2..3....2..1..6....4..5..0....5..0..4....3..0..6
..6..2..1....5..4..0....3..5..1....6..0..3....0..3..6....4..2..3....6..1..2
..1..6..2....1..3..5....1..6..2....3..6..0....6..0..3....3..5..1....2..2..5
..2..3..4....6..3..0....2..1..6....0..5..4....3..1..5....1..6..2....5..3..1
..4..5..0....1..2..6....6..3..0....4..4..1....5..2..2....2..1..6....1..4..4

Crossrefs

Cf. A265117.

Sequence in context: A359686 A325318 A255680 * A214205 A278147 A250109

Adjacent sequences: A265112 A265113 A265114 * A265116 A265117 A265118

Keyword

nonn

Author

R. H. Hardin, Dec 01 2015

Status

approved