login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A023939 Theta series of laminated lattice LAMBDA_17. 1
1, 0, 5346, 98304, 918432, 4587520, 19177024, 57212928, 165906146, 376963072, 883961280, 1698136064, 3470990016, 5941886976, 11030584064, 17382047744, 30021568416, 44448612352, 72629554338, 102332399616, 160092212672, 216807505920, 327100501440, 428995051520 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

REFERENCES

J. H. Conway and N. J. A. Sloane, "Sphere Packings, Lattices and Groups", Springer-Verlag, p. 174.

LINKS

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

PROG

(Magma)

L := Lattice("Lambda", 17);

B := Basis(ThetaSeriesModularFormSpace(L), 20);

Coefficients(B[1] + 5346*B[3] + 98304*B[4] + 918432*B[5] + 4587520*B[6]+19177024*B[7]+57212928*B[8]+165906146*B[9]); // Andy Huchala, Jun 16 2021

CROSSREFS

Sequence in context: A050814 A234213 A187435 * A204863 A259893 A206681

Adjacent sequences:  A023936 A023937 A023938 * A023940 A023941 A023942

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified July 29 12:51 EDT 2021. Contains 346346 sequences. (Running on oeis4.)