A097584 Number of well-rounded minimal classes of lattices in dimension n.

1, 2, 5, 18, 136, 5634

Offset: 1

Author

N. J. A. Sloane, Sep 22 2004

Keywords

• nonn
• hard
• more

References

• J. Martinet, Les réseaux parfaits des espaces Euclidiens, Masson, Paris, 1996.
• J. Martinet, Perfect Lattices in Euclidean Spaces, Springer-Verlag, NY, 2003.
• G. Nebe, Review of J. Martinet, Perfect Lattices in Euclidean Spaces, Bull. Amer. Math. Soc., 41 (No. 4, 2004), 529-533.

Links

• Christian Batut and Jacques Martinet, Lattices and spherical designs, 2005-2014. See pages 12-13.

Crossrefs

Cf. A037075, A065536.

Extensions

a(6) added from Batut & Martinet by Andrey Zabolotskiy, Feb 20 2021