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A164972 Theta series of a dual-extremal lattice of dimension 28 and level 2. 0
1, 0, 0, 6720, 98280, 5370624, 19138560, 425761920, 805208040, 11171166720, 14651449344, 151720309440, 156717687840, 1331073596160, 1162883174400, 8553148603776, 6596666916840, 43528633182720, 30507984568320 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,4

REFERENCES

R. Bacher, B. Venkov, Réseaux entiers unimodulaires sans racines en dimensions 27 et 28. In Réseaux euclidiens, designs sphériques et formes modulaires, 212--267, Monogr. Enseign. Math., 37, Enseignement Math., Geneva, 2001.

S. Boecherer and G. Nebe, On theta series attached to maximal lattices and their adjoints, Preprint 2009.

LINKS

Table of n, a(n) for n=0..18.

P. Gaborit, A bound for certain s-extremal lattices and codes Archiv der Mathematik 89 (2007) 143-151.

CROSSREFS

Sequence in context: A252602 A224689 A190292 * A190129 A237041 A031580

Adjacent sequences:  A164969 A164970 A164971 * A164973 A164974 A164975

KEYWORD

nonn

AUTHOR

Gabi Nebe (nebe(AT)math.rwth-aachen.de), Sep 03 2009

STATUS

approved

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Last modified June 18 07:33 EDT 2019. Contains 324203 sequences. (Running on oeis4.)