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A054911
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Number of n-dimensional odd unimodular lattice (or quadratic forms).
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6
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0, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 3, 3, 4, 5, 6, 9, 13, 16, 28, 40, 68, 117, 273, 665, 2566, 17059, 374062
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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0,10
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REFERENCES
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Gaëtan Chenevier, Unimodular hunting, Cogent Seminar, Jul 05 2021
J. H. Conway and N. J. A. Sloane, "Sphere Packings, Lattices and Groups", Springer-Verlag, p. 49.
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LINKS
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Gaëtan Chenevier, Unimodular hunting, Modular Forms Workshop, Oberwolfach online, Feb 2021.
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CROSSREFS
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KEYWORD
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nonn,nice,hard
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AUTHOR
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STATUS
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approved
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