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%I #14 Jan 29 2022 01:09:21
%S 1,0,98280,19138560,805208040,14651449344,156717687840,1162883174400,
%T 6596666916840,30507984568320,119992701299184,414348381296640,
%U 1283840894706720,3635166831206400,9523995863722560
%N Theta series of 28-dimensional Quebbemann lattice.
%C This lattice has the highest possible density of any 28-dimensional even lattice of level at most 2.
%C Numbers so far are also terms of A002520. - _Ralf Stephan_, Aug 23 2004
%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.
%e 1 + 98280*q^2 + 19138560*q^3 + 805208040*q^4 + 14651449344*q^5 + 156717687840*q^6 + ...
%K nonn,nice,easy
%O 0,3
%A _N. J. A. Sloane_
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