A034599 Theta series of (putative) extremal 2-modular even lattice in dimension 20.

1, 0, 3960, 168960, 2094840, 16625664, 80652000, 343664640, 1073639160, 3299450880, 8000389584, 20081064960, 41278084320, 90307768320, 165298921920, 327406565376, 549720551160, 1009911767040, 1587054299160

Offset

0,3

Comments

This is almost certainly the same sequence as A007038 (this would follow if the lattice R_20 is 2-modular). - N. J. A. Sloane, Sep 23 2019

Links

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

H.-G. Quebbemann, Modular lattices in Euclidean spaces, J. Number Theory, 54 (1995), 190-202.

Crossrefs

Cf. A007038. [R. J. Mathar, Oct 20 2008]

Sequence in context: A230617 A250531 A319800 * A007038 A222783 A107540

Adjacent sequences: A034596 A034597 A034598 * A034600 A034601 A034602

Keyword

nonn

Author

N. J. A. Sloane.

Status

approved