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A268362
Number of n X n arrays containing n copies of 0..n-1 with row sums equal.
1
1, 4, 216, 643680, 269568000000, 39489843246336000000, 2716675055795577271091911200000, 130980129445039212210880200374052628780800000
OFFSET
1,2
COMMENTS
Diagonal of A268367.
EXAMPLE
Some solutions for n=3
..1..2..0....0..2..1....0..2..1....0..2..1....1..0..2....2..0..1....1..0..2
..1..0..2....1..2..0....0..2..1....1..0..2....1..2..0....2..0..1....0..2..1
..1..2..0....2..1..0....1..2..0....1..2..0....1..2..0....0..2..1....0..1..2
CROSSREFS
Cf. A268367.
Sequence in context: A371204 A036740 A038786 * A072694 A248099 A068210
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 03 2016
STATUS
approved