login
This site is supported by donations to The OEIS Foundation.
Logo

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A008693 Theta series of Niemeier lattice of type D_8^3. 3
1, 336, 188496, 16857792, 397539408, 4631004000, 34415623872, 187484309376, 814908160080, 2975513303952, 9486512350560, 27053125549632, 70486112362176, 169930901206752, 384163721375616 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

REFERENCES

J. H. Conway and N. J. A. Sloane, "Sphere Packings, Lattices and Groups", Springer-Verlag, p. 407.

FORMULA

This series is the q-expansion of 7/9 E_4(z)^3 + 2/9 E_6(z)^2. Cf. A004009, A013973. - Daniel D. Briggs, Nov 25 2011

CROSSREFS

Sequence in context: A159206 A184557 A056933 * A068298 A003790 A003924

Adjacent sequences:  A008690 A008691 A008692 * A008694 A008695 A008696

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
Recent Additions | More pages | Superseeker | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified February 16 17:48 EST 2012. Contains 205939 sequences.