A003134 Orders of Weyl groups of type E_n.

51840, 2903040, 696729600

Offset

6,1

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].

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

Table of n, a(n) for n=6..8.

Wikipedia, Exceptional Lie algebra

Prog

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

Crossrefs

Cf. A001217, A113907.

Sequence in context: A289823 A147530 A184454 * A253989 A253996 A258906

Adjacent sequences: A003131 A003132 A003133 * A003135 A003136 A003137

Keyword

nonn,fini,full,bref

Author

N. J. A. Sloane

Status

approved