

A274806


Number of diagonal Latin squares of order n.


11




OFFSET

1,4


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


LINKS

E. I. Vatutin, O. S. Zaikin, A. D. Zhuravlev, M. O. Manzuk, S. E. Kochemazov and V. S. Titov, Using grid systems for enumerating combinatorial objects on example of diagonal Latin squares, Proceedings of Distributed Computing and gridtechnologies in science and education (GRID'16), JINR, Dubna, 2016, pp. 114115.
E. I. Vatutin, V. S. Titov, O. S. Zaikin, S. E. Kochemazov, S. U. Valyaev, A. D. Zhuravlev, and M. O. Manzuk, Using grid systems for enumerating combinatorial objects with example of diagonal Latin squares, Information technologies and mathematical modeling of systems (2016), pp. 154157, (in Russian).
E. I. Vatutin, Special types of diagonal Latin squares, Cloud and distributed computing systems in electronic control conference, within the National supercomputing forum (NSCF  2022). PereslavlZalessky, 2023. pp. 918. (in Russian)


FORMULA



CROSSREFS



KEYWORD

nonn,more,hard


AUTHOR



EXTENSIONS

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


STATUS

approved



