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A029593 Theta series of quadratic form with Gram matrix [ 1, 0, 0; 0, 3, 1; 0, 1, 4 ]. 1
1, 2, 0, 2, 8, 6, 4, 4, 4, 8, 4, 0, 8, 16, 4, 2, 16, 4, 4, 8, 12, 20, 0, 2, 16, 12, 4, 6, 16, 16, 4, 10, 12, 2, 12, 4, 20, 26, 4, 8, 24, 16, 4, 4, 2, 32, 12, 4, 20, 22, 4, 4, 32, 12, 12, 2, 16, 8, 8, 10, 16, 48, 4, 8, 36, 8, 0, 10, 16, 38, 12, 10, 20, 24, 4, 12, 40, 0, 4, 12 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

This is the monoclinic P lattice (the classical holotype) of dimension 3.

LINKS

John Cannon, Table of n, a(n) for n = 0..10000

G. Nebe and N. J. A. Sloane, Home page for this lattice

EXAMPLE

1 + 2*q + 2*q^3 + 8*q^4 + 6*q^5 + 4*q^6 + 4*q^7 + 4*q^8 + 8*q^9 + 4*q^10 + ...

CROSSREFS

Sequence in context: A301772 A021497 A201735 * A196504 A182550 A004514

Adjacent sequences:  A029590 A029591 A029592 * A029594 A029595 A029596

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified October 18 03:25 EDT 2021. Contains 348065 sequences. (Running on oeis4.)