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

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A027825 If there were a unimodular 25-dimensional lattice with minimal norm 3, it would have this as the theta series of its shadow. Unfortunately, no such lattice exists. 0
0, 200, 405000, 34009632, 828786600, 10057575600, 78117080400, 444684760200, 2013684539760, 7650742653000, 25296927545000, 74726358240600, 201078440944200 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

LINKS

E. M. Rains and N. J. A. Sloane, The Shadow Theory of Modular and Unimodular Lattices, J. Number Theory, 73 (1998), 359-389.

EXAMPLE

200*q^(9/4)+ 405000*q^(17/4)+ 34009632*q^(25/4)+...

CROSSREFS

Sequence in context: A035747 A022152 A035835 * A098963 A107843 A076192

Adjacent sequences:  A027822 A027823 A027824 * A027826 A027827 A027828

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com), E. M. Rains

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 15 04:23 EST 2012. Contains 205694 sequences.