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Search: id:A028950
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| A028950 |
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Minimal norm of n-dimensional, strictly odd, unimodular lattice. |
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+0
1
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| 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 2, 3, 3, 3, 3, 3, 3, 4, 3
(list; graph; listen)
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OFFSET
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0,13
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REFERENCES
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J. H. Conway and N. J. A. Sloane, A new upper bound for the minimum of an integral lattice of determinant one, Bull. Amer. Math. Soc., 23 (1990), 383-387.
J. H. Conway and N. J. A. Sloane, "Sphere Packings, Lattices and Groups", Springer-Verlag, p. xxiv.
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CROSSREFS
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Cf. A005136.
Sequence in context: A043568 A043543 A088601 this_sequence A094916 A036485 A030547
Adjacent sequences: A028947 A028948 A028949 this_sequence A028951 A028952 A028953
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KEYWORD
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nonn,hard
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AUTHOR
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njas
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