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Search: id:A004673
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| A004673 |
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Theta series of extremal even unimodular lattice in dimension 56. |
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+0
2
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| 1, 0, 0, 15590400, 36957286800, 15284192071680, 2099603881267200, 134803322124134400, 4960017097962973200, 119289241340847513600, 2051414989573311774720, 26894038407511734144000, 281804009505443595441600
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OFFSET
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0,4
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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. 195.
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LINKS
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N. Heninger, E. M. Rains and N. J. A. Sloane, On the Integrality of n-th Roots of Generating Functions, J. Combinatorial Theory, Series A, 113 (2006), 1732-1745.
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CROSSREFS
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Sequence in context: A104334 A128480 A121840 this_sequence A058909 A105650 A155949
Adjacent sequences: A004670 A004671 A004672 this_sequence A004674 A004675 A004676
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KEYWORD
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nonn
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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