A029593 Theta series of quadratic form with Gram matrix [ 1, 0, 0; 0, 3, 1; 0, 1, 4 ].

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

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: A021497 A201735 A370832 * A196504 A182550 A004514

Adjacent sequences: A029590 A029591 A029592 * A029594 A029595 A029596

Keyword

nonn

Author

N. J. A. Sloane.

Status

approved