A338250 Number of isomorphism classes of pairs of orthogonal diagonal Latin squares of order n.

1, 0, 0, 1, 1, 0, 7, 4545, 291670

Offset

1,7

Links

Table of n, a(n) for n=1..9.

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).

Index entries for sequences related to Latin squares and rectangles.

Crossrefs

Cf. A287651, A339926.

Sequence in context: A203679 A145696 A361452 * A103856 A364640 A340292

Adjacent sequences: A338247 A338248 A338249 * A338251 A338252 A338253

Keyword

nonn,more,hard

Author

Eduard I. Vatutin, Dec 22 2020

Status

approved