A self-orthogonal diagonal Latin square is a diagonal Latin square orthogonal to its transpose.
Table of n, a(n) for n=1..9.
Harry White, Self-orthogonal Diagonal Latin Squares. How many.
Index entries for sequences related to Latin squares and rectangles
a(n) = A287762(n)/n!.
Cf. A160368, A287762.
Sequence in context: A173220 A012362 A012710 * A009512 A287651 A163259
Adjacent sequences: A287758 A287759 A287760 * A287762 A287763 A287764
Eduard I. Vatutin, May 31 2017