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%I #11 Sep 23 2019 13:24:48
%S 1,0,3960,168960,2094840,16625664,80652000,343664640,1073639160,
%T 3299450880,8000389584,20081064960,41278084320,90307768320,
%U 165298921920,327406565376,549720551160,1009911767040,1587054299160
%N Theta series of (putative) extremal 2-modular even lattice in dimension 20.
%C 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
%H H.-G. Quebbemann, <a href="http://dx.doi.org/10.1006/jnth.1995.1111">Modular lattices in Euclidean spaces</a>, J. Number Theory, 54 (1995), 190-202.
%Y Cf. A007038. [_R. J. Mathar_, Oct 20 2008]
%K nonn
%O 0,3
%A _N. J. A. Sloane_.
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