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A022077 Theta series of D*_24 lattice. 1
1, 48, 1104, 16192, 170064, 1362336, 25439936, 44981376, 597735504, 721175536, 6949969248, 6631997376, 51590848192, 41469483552, 281239310208, 200343312768, 1222458062928, 793229226336, 4463565085328, 2697825744960, 14228067218784, 8110465650176 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

REFERENCES

J. H. Conway and N. J. A. Sloane, "Sphere Packings, Lattices and Groups", Springer-Verlag, p. 120.

LINKS

Andy Huchala, Table of n, a(n) for n = 0..20000

EXAMPLE

G.f. = 1 + 48*q^2 + 1104*q^4 + ...

PROG

(Sage)

L = [1, 48, 1104, 16192]

M = ModularForms(Gamma0(2), 12)

bases = [_.q_expansion(20) for _ in M.integral_basis()]

f = sum(x*y for (x, y) in zip(bases, L)); list(f) # Andy Huchala, Jul 14 2021

CROSSREFS

Sequence in context: A010839 A000156 A319309 * A010964 A287991 A290403

Adjacent sequences:  A022074 A022075 A022076 * A022078 A022079 A022080

KEYWORD

nonn

AUTHOR

N. J. A. Sloane

EXTENSIONS

More terms from Andy Huchala, Jul 14 2021

STATUS

approved

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Last modified October 23 03:30 EDT 2021. Contains 348211 sequences. (Running on oeis4.)