login
Highest minimal norm of n-dimensional unimodular lattice.
(Formerly M0057)
1

%I M0057 #13 Oct 26 2023 23:16:18

%S 0,1,1,1,1,1,1,1,2,1,1,1,2,1,2,2,2,2,2,2,2,2,2,3,4,2,3,3,3,3,3,3,4,3

%N Highest minimal norm of n-dimensional unimodular lattice.

%D J. H. Conway and N. J. A. Sloane, A new upper bound for the minimum of an integral lattice of determinant one, Bull. Amer. Math. Soc., 23 (1990), 383-387.

%D J. H. Conway and N. J. A. Sloane, "Sphere Packings, Lattices and Groups", Springer-Verlag, p. xxiv.

%D N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

%K nonn,hard

%O 0,9

%A _N. J. A. Sloane_

%E The terms continue: 3 or 4, 3 or 4, 4, 3 or 4, 3 or 4, 3 or 4, 4 (at dim 40).