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A305568 Number of bachelor diagonal Latin squares with constant first row. 2
0, 0, 0, 0, 4, 128, 170944, 7446955776 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,5

COMMENTS

A bachelor diagonal Latin square is one with no orthogonal mate.

LINKS

Table of n, a(n) for n=1..8.

E. I. Vatutin, Discussion about properties of diagonal Latin squares at forum.boinc.ru (in Russian)

Index entries for sequences related to Latin squares and rectangles

FORMULA

a(n) = A305569(n) / n!.

a(n) = A274171(n) - A305570(n).

CROSSREFS

Cf. A266177, A305569, A305570.

Sequence in context: A141367 A141368 A146555 * A057134 A041495 A188315

Adjacent sequences:  A305565 A305566 A305567 * A305569 A305570 A305571

KEYWORD

nonn,more

AUTHOR

Eduard I. Vatutin, Jun 05 2018

STATUS

approved

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Last modified September 25 20:53 EDT 2018. Contains 315425 sequences. (Running on oeis4.)