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A005138
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Number of n-dimensional determinant 2 lattices.
(Formerly M0262)
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0
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0, 1, 1, 1, 1, 1, 1, 2, 2, 3, 3, 4, 4, 6, 7, 11, 14, 24, 30
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,8
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REFERENCES
| J. H. Conway and N. J. A. Sloane, "Sphere Packings, Lattices and Groups", Springer-Verlag, p. 400.
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
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CROSSREFS
| Sequence in context: A173091 A029025 A035396 * A035679 A136537 A153928
Adjacent sequences: A005135 A005136 A005137 * A005139 A005140 A005141
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KEYWORD
| nonn
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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