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A287761 Number of self-orthogonal diagonal Latin squares of order n with ordered first string. 1
1, 0, 0, 2, 4, 0, 64, 1152, 224832 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

COMMENTS

A self-orthogonal diagonal Latin square is a diagonal Latin square orthogonal to its transpose.

LINKS

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

FORMULA

a(n) = A287762(n)/n!.

CROSSREFS

Cf. A160368, A287762.

Sequence in context: A173220 A012362 A012710 * A009512 A287651 A163259

Adjacent sequences:  A287758 A287759 A287760 * A287762 A287763 A287764

KEYWORD

nonn,more,changed

AUTHOR

Eduard I. Vatutin, May 31 2017

STATUS

approved

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Last modified October 18 18:08 EDT 2017. Contains 293525 sequences.