A034599 - OEIS

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

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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: A250531 A319800 A373391 * A007038 A222783 A107540

Adjacent sequences: A034596 A034597 A034598 * A034600 A034601 A034602

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

STATUS

approved