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Search: id:A125561
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| A125561 |
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Theta series of 5-dimensional lattice A5^{+2}. |
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+0
1
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| 1, 0, 0, 20, 30, 0, 0, 60, 90, 0, 0, 180, 140, 0, 0, 132, 270, 0, 0, 420, 360, 0, 0, 360, 330, 0, 0, 560, 660, 0, 0, 540, 810, 0, 0, 1080, 570, 0, 0, 480, 1020, 0, 0, 1500, 1260, 0, 0, 1080, 1100, 0, 0, 1320, 1560, 0, 0, 1320, 1620, 0, 0, 2340, 1452, 0, 0, 1140, 2190, 0, 0, 2940
(list; graph; listen)
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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, Low-Dimensional Lattices I: Quadratic Forms of Small Determinant, Proc. Royal Soc. London, Series A, 418 (1988), 17-41.
J. H. Conway and N. J. A. Sloane, "Sphere Packings, Lattices and Groups", Springer-Verlag, p. 110.
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LINKS
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John Cannon, Table of n, a(n) for n = 0..10000
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EXAMPLE
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1 + 20*q^3 + 30*q^4 + 60*q^7 + 90*q^8 + 180*q^11 + 140*q^12 + 132*q^15 + ...
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CROSSREFS
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Sequence in context: A039286 A043889 A113621 this_sequence A107714 A029721 A132067
Adjacent sequences: A125558 A125559 A125560 this_sequence A125562 A125563 A125564
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KEYWORD
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nonn
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AUTHOR
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njas, Jan 31 2007
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