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A002495 Theta series of 27-dimensional unimodular lattice with root system A_1 with no parity vector of norm 3. 0

%I

%S 1,0,2,2676,101118

%N Theta series of 27-dimensional unimodular lattice with root system A_1 with no parity vector of norm 3.

%D R. Bacher and B. B. Venkov, Reseaux entiers unimodulaires sans racine en dimension 27 et 28, in Reseaux euclidiens, designs spheriques et formes modulaires, pp. 212-267, Enseignement Math., Geneva, 2001.

%H R. Bacher and B. B. Venkov, Reseaux entiers unimodulaires sans racine en dimension 27 et 28 (<a href="http://www-fourier.ujf-grenoble.fr/PREP/html/a332/a332.html">html</a>, <a href="http://www-fourier.ujf-grenoble.fr/cgi-bin/envoips.pl?PS=PREP/ps/t332">ps</a>).

%K nonn,more

%O 0,3

%A _N. J. A. Sloane_.

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Last modified August 17 17:05 EDT 2018. Contains 313816 sequences. (Running on oeis4.)