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A023944
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Theta series of laminated lattice LAMBDA_22.
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1
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1, 0, 49896, 2821632, 50332590, 467596800, 2900976144, 13527005184, 51515674056, 166963872768, 479797555248, 1241996861952, 2970712710438, 6601476879360, 13877851716432, 27612993881088, 52754008389390, 96534440589312, 171306687302520, 293591846287872
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listen;
history;
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internal format)
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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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LINKS
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PROG
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(Sage)
e = DirichletGroup(6).0
M = ModularForms(e, 11, QQ)
bases = [_.q_expansion(20) for _ in M.integral_basis()]
f = sum(x*y for (x, y) in zip(bases, [1, 0, 49896, 2821632, 50332590, 467596800, 2900976144, 13527005184, 51515674056, 166963872768, 479797555248, 1241996861952, 2970712710438]))
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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