cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A274806 Number of diagonal Latin squares of order n.

Original entry on oeis.org

1, 0, 0, 48, 960, 92160, 862848000, 300286741708800, 1835082219864832081920
Offset: 1

Views

Author

Eduard I. Vatutin, Jul 07 2016

Keywords

Comments

A diagonal Latin square is a Latin square in which both the main diagonal and main antidiagonal contain each element. - Andrew Howroyd, Oct 05 2020

Crossrefs

Formula

a(n) = A274171(n) * n!.

Extensions

a(9) from Vatutin et al. (2016) added by Max Alekseyev, Oct 05 2016
a(9) corrected by Eduard I. Vatutin, Oct 20 2016