%I A002495
%S A002495 1,0,2,2676,101118
%N A002495 Theta series of 27-dimensional unimodular lattice with root system A_1 
               with no parity vector of norm 3.
%D A002495 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 A002495 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>).
%Y A002495 Sequence in context: A135234 A114067 A109119 this_sequence A078457 A128148 
               A158348
%Y A002495 Adjacent sequences: A002492 A002493 A002494 this_sequence A002496 A002497 
               A002498
%K A002495 nonn,more
%O A002495 0,3
%A A002495 N. J. A. Sloane (njas(AT)research.att.com).