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A339926
Number of pairs of orthogonal diagonal Latin squares of order n.
2
1, 0, 0, 1152, 57600, 0, 8128512000, 2149984921190400, 44762708532894105600
OFFSET
1,4
FORMULA
a(n) = A287651(n) * (n!)^2.
CROSSREFS
Sequence in context: A131527 A229590 A269216 * A170775 A350691 A166490
KEYWORD
nonn,more,hard
AUTHOR
Eduard I. Vatutin, Dec 23 2020
STATUS
approved