A003134 Orders of Weyl groups of type E_n.

51840, 2903040, 696729600

Offset: 6

Author

N. J. A. Sloane

Keywords

• nonn
• fini
• full
• bref

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].
• J. H. Conway and N. J. A. Sloane, "Sphere Packings, Lattices and Groups", Springer-Verlag, p. 120.
• H. S. M. Coxeter and W. O. J. Moser, Generators and Relations for Discrete Groups, 4th ed., Springer-Verlag, NY, reprinted 1984.

Links

• Wikipedia, Exceptional Lie algebra

Crossrefs

Cf. A001217, A113907.

Programs

Magma

[ #CoxeterGroup(Sprintf("E%o",n)) : n in [6..8]]; // Sergei Haller (sergei(AT)sergei-haller.de), Dec 21 2006