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A005104 Minimal determinant of n-dimensional norm 4 lattice.
(Formerly M3442)
0
1, 4, 12, 32, 64, 128, 192, 256, 256 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

REFERENCES

J. H. Conway and N. J. A. Sloane, "Sphere Packings, Lattices and Groups", Springer-Verlag, p. 180.

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

LINKS

Table of n, a(n) for n=0..8.

CROSSREFS

Sequence in context: A273387 A161217 A152527 * A028921 A028922 A066150

Adjacent sequences:  A005101 A005102 A005103 * A005105 A005106 A005107

KEYWORD

nonn,more,hard

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified April 20 08:31 EDT 2019. Contains 322306 sequences. (Running on oeis4.)