

A266166


Number of reduced pairs of orthogonal Latin squares.


7




OFFSET

1,4


COMMENTS

A pair of orthogonal Latin squares is reduced if their first rows are in natural order and so is the first column of the first square.


LINKS

Table of n, a(n) for n=1..9.
J. Egan and I. M. Wanless, Enumeration of MOLS of small order, Mathematics of Computation 85, 2016, 799824.
Stepan Kochemazov, Oleg Zaikin, Alexander Semenov, Runtime Estimation for Enumerating all Mutually Orthogonal Diagonal Latin Squares of Order 10, 2017 40th International Convention on Information and Communication Technology, Electronics and Microelectronics (MIPRO). PDF download
Ian Wanless, Data on MOLS


CROSSREFS

Sequence A072377 is obtained from this sequence by multiplying by n!n!(n1)!/2 (except when n=1).
Sequence in context: A208208 A290189 A279883 * A077452 A113918 A253603
Adjacent sequences: A266163 A266164 A266165 * A266167 A266168 A266169


KEYWORD

nonn,nice,more


AUTHOR

Ian Wanless, Dec 22 2015


STATUS

approved



