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A003840
Order of (usually) simple Chevalley group D_n (9).
1
2, 129600, 50759843097600, 129182006871144805294080000, 2154683673871373733440812330742751559680000, 235766858527753399707968381023024646011879419539171573760000000
OFFSET
1,1
REFERENCES
J. H. Conway, R. T. Curtis, S. P. Norton, R. A. Parker and R. A. Wilson, ATLAS of Finite Groups. Oxford Univ. Press, 1985 [for best online version see https://oeis.org/wiki/Welcome#Links_to_Other_Sites], p. xvi.
H. S. M. Coxeter and W. O. J. Moser, Generators and Relations for Discrete Groups, 4th ed., Springer-Verlag, NY, reprinted 1984, p. 131.
FORMULA
a(n) = d(9,n) where d(q, n) is defined in A003837. - Sean A. Irvine, Sep 17 2015
CROSSREFS
Sequence in context: A296104 A170995 A319022 * A122540 A324438 A167518
KEYWORD
nonn,easy
EXTENSIONS
a(6) from Sean A. Irvine, Sep 17 2015
STATUS
approved