login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A299784 Maximal size of main class for diagonal Latin squares of order n with first row 1..n. 3
1, 0, 0, 2, 4, 96, 192, 1536 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

COMMENTS

a(n) <= 2^m * m! * 4, m = floor(n/2).

LINKS

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

E. Vatutin, A. Belyshev, S. Kochemazov, O. Zaikin, N. Nikitina, Enumeration of isotopy classes of diagonal Latin squares of small order using volunteer computing, Supercomputing Days Russia 2018, Moscow, Moscow State University, 2018, pp. 933-942.

E. Vatutin, A. Belyshev, S. Kochemazov, O. Zaikin, N. Nikitina, Enumeration of isotopy classes of diagonal Latin squares of small order using volunteer computing, Communications in Computer and Information Science. Vol. 965. Springer, 2018. pp. 578-586.

Index entries for sequences related to Latin squares and rectangles

FORMULA

a(n) = A299787(n)/n!.

CROSSREFS

Cf. A287764, A299783.

Sequence in context: A270484 A156496 A007534 * A009379 A092918 A018428

Adjacent sequences:  A299781 A299782 A299783 * A299785 A299786 A299787

KEYWORD

nonn,more

AUTHOR

Eduard I. Vatutin, Jan 21 2019

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified July 22 10:03 EDT 2019. Contains 325219 sequences. (Running on oeis4.)