0,3

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.

R. Bacher and B. B. Venkov, Reseaux entiers unimodulaires sans racine en dimension 27 et 28 (html, ps).

Sequence in context: A058423 A110027 A062585 this_sequence A160224 A129061 A011541

Adjacent sequences: A002487 A002488 A002489 this_sequence A002491 A002492 A002493

nonn,more

N. J. A. Sloane (njas(AT)research.att.com).