0,3
Plesken, J. Algebra, vol. 97 (1985) pp. 286-312
J. H. Conway and N. J. A. Sloane, "Low-Dimensional Lattices II: Subgroups of GL(n,Z)", Proc. Royal Soc. London, A 419 (1988), 29-68.
G. Nebe and N. J. A. Sloane, Home page for this lattice
Sequence in context: A020413 A031806 A186045 * A015286 A172594 A115553
Adjacent sequences: A015155 A015156 A015157 * A015159 A015160 A015161
nonn
N. J. A. Sloane (njas(AT)research.att.com).