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A002860 Number of Latin squares of order n; or labeled quasigroups.
(Formerly M2051 N0812)
23
1, 2, 12, 576, 161280, 812851200, 61479419904000, 108776032459082956800, 5524751496156892842531225600, 9982437658213039871725064756920320000, 776966836171770144107444346734230682311065600000 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

REFERENCES

Alter, Ronald. Research Problems: How Many Latin Squares are There? Amer. Math. Monthly 82 (1975), no. 6, 632--634. MR1537769

S. E. Bammel and J. Rothstein, The number of 9x9 Latin squares, Discrete Math., 11 (1975), 93-95.

Jeranfer Bermúdez, Richard García, Reynaldo López and Lourdes Morales, SOME PROPERTIES OF LATIN SQUARES, http://ccom.uprrp.edu/~labemmy/Wordpress/wp-content/uploads/2010/11/4_Presentation_Some-Properties-of-Latin-Squares_March2009.pdf

J. W. Brown, Enumeration of Latin squares with application to order 8, J. Combin. Theory, 5 (1968), 177-184.

Gilbert, E. N. Latin squares which contain no repeated digrams. SIAM Rev. 7 1965 189--198. MR0179095 (31 #3346). Mentions this sequence. - N. J. A. Sloane, Mar 15 2014

Jucys, A.-A. A. The number of distinct Latin squares as a group-theoretical constant. J. Combinatorial Theory Ser. A 20 (1976), no. 3, 265--272. MR0419259 (54 #7283)

B. D. McKay and I. M. Wanless, On the number of Latin squares. Preprint 2004. http://cs.anu.edu.au/~bdm/papers/ls11.pdf

Clifford A. Pickover, The Math Book, From Pythagoras to the 57th Dimension, 250 Milestones in the History of Mathematics, Sterling Publ., NY, 2009.

J. Riordan, An Introduction to Combinatorial Analysis, Wiley, 1958, p. 210.

H. J. Ryser, Combinatorial Mathematics. Mathematical Association of America, Carus Mathematical Monograph 14, 1963, p. 53.

N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).

N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

D. S. Stones, The many formulae for the number of Latin rectangles, Electron. J. Combin 17 (2010), A1.

D. S. Stones and I. M. Wanless, Divisors of the number of Latin rectangles, J. Combin. Theory Ser. A 117 (2010), 204-215.

M. B. Wells, The number of Latin squares of order 8, J. Combin. Theory, 3 (1967), 98-99.

LINKS

Table of n, a(n) for n=1..11.

B. D. McKay and E. Rogoyski, Latin squares of order ten, Electron. J. Combinatorics, 2 (1995) #N3.

B. D. McKay and I. M. Wanless, On the number of Latin squares, Ann. Combinat. 9 (2005) 335-344.

T. Sillke, How many Latin Squares of order-N are there?

Eric Weisstein's World of Mathematics, Latin Square.

Index entries for sequences related to Latin squares and rectangles

Index entries for sequences related to quasigroups

CROSSREFS

Equals n!*A000479(n) = n!*(n-1)!*A000315(n). Cf. A003090, A040082, A057991.

Sequence in context: A013147 A050643 A145513 * A108078 A052129 A216335

Adjacent sequences:  A002857 A002858 A002859 * A002861 A002862 A002863

KEYWORD

hard,nonn,nice

AUTHOR

N. J. A. Sloane.

EXTENSIONS

One more term (from the McKay-Wanless article) from Richard Bean (rwb(AT)eskimo.com), Feb 17 2004

STATUS

approved

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Last modified October 1 18:05 EDT 2014. Contains 247520 sequences.