A339926 Number of pairs of orthogonal diagonal Latin squares of order n.

1, 0, 0, 1152, 57600, 0, 8128512000, 2149984921190400, 44762708532894105600

Offset: 1

Author

Eduard I. Vatutin, Dec 23 2020

Keywords

• nonn
• more
• hard

Links

• Eduard I. Vatutin, Natalia N. Nikitina, Maxim O. Manzuk, First results of an experiment on studying the properties of DLS of order 9 in the volunteer distributed computing projects Gerasim@Home and RakeSearch (in Russian).
• Eduard I. Vatutin, Natalia N. Nikitina, Maxim O. Manzuk, Additional calculated results of an experiment on studying the properties of DLS of order 9 in the volunteer distributed computing projects Gerasim@Home and RakeSearch (in Russian).

Crossrefs

Cf. A287651, A338250.

Formula

a(n) = A287651(n) * (n!)^2.