A self-orthogonal diagonal Latin square is a diagonal Latin square orthogonal to its transpose.
Table of n, a(n) for n=1..9.
H. White, Self-orthogonal Diagonal Latin Squares. How many.
Index entries for sequences related to Latin squares and rectangles
a(n) = A287761(n)*n!.
Cf. A160368, A287761.
Sequence in context: A192828 A259851 A223419 * A305571 A229505 A168351
Adjacent sequences: A287759 A287760 A287761 * A287763 A287764 A287765
Eduard I. Vatutin, May 31 2017