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Search: id:A028924
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| A028924 |
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Maximal number of pairs of minimal vectors in n-dimensional laminated lattice. |
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+0
1
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| 0, 1, 3, 6, 12, 20, 36, 63, 120, 136, 168, 219, 324, 453, 711, 1170, 2160, 2673, 3699, 5334, 8700, 13860, 24948, 46575, 98280, 98328, 98424, 98571, 98868, 99253, 100023, 101346, 104160
(list; graph; listen)
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OFFSET
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0,3
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REFERENCES
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J. H. Conway and N. J. A. Sloane, "Sphere Packings, Lattices and Groups", Springer-Verlag, p. 174.
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CROSSREFS
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A002336 / 2.
Sequence in context: A028926 A038577 A028925 this_sequence A034738 A054064 A053479
Adjacent sequences: A028921 A028922 A028923 this_sequence A028925 A028926 A028927
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KEYWORD
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nonn,hard
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com) and J. H. Conway (conway(AT)math.princeton.edu)
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EXTENSIONS
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Entry for n=31 corrected by C. Muses.
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