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A022064
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Theta series of D*_11 lattice.
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1
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1, 0, 0, 0, 22, 0, 0, 0, 220, 0, 0, 2048, 1320, 0, 0, 0, 5302, 0, 0, 22528, 15224, 0, 0, 0, 33528, 0, 0, 112640, 63360, 0, 0, 0, 116380, 0, 0, 360448, 209550, 0, 0, 0, 339064, 0, 0, 901120, 491768, 0, 0, 0, 719400, 0, 0, 1959936, 1095160, 0, 0, 0, 1538416, 0
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OFFSET
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0,5
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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. 120.
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LINKS
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EXAMPLE
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G.f. = 1 + 22*q^4 + 220*q^8 + ...
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PROG
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(Magma)
L := Dual(Lattice("D", 11));
B := Basis(ThetaSeriesModularFormSpace(L), 20);
S := [1, 0, 0, 0, 22, 0, 0];
Coefficients(&+[B[i] * S[i] : i in [1..6]]); // Andy Huchala, Jul 13 2021
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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