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A008699 Theta series of Niemeier lattice of type A_6^4. 1
1, 168, 192528, 16815456, 397786704, 4630192560, 34416639936, 187487122368, 814893967440, 2975532395976, 9486531825120, 27053035734816, 70486174680768, 169930998266736, 384163653863808 (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. 407.

LINKS

Table of n, a(n) for n=0..14.

FORMULA

This series is the q-expansion of 49/72 E_4(z)^3 + 23/72 E_6(z)^2. Cf. A004009, A013973. - Daniel D. Briggs, Nov 25 2011

CROSSREFS

Sequence in context: A185404 A146200 A159394 * A223125 A003797 A003929

Adjacent sequences:  A008696 A008697 A008698 * A008700 A008701 A008702

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified June 20 00:15 EDT 2013. Contains 226416 sequences.