%I #10 Feb 22 2021 07:45:37
%S 1,2,5,18,136,5634
%N Number of well-rounded minimal classes of lattices in dimension n.
%D J. Martinet, Les réseaux parfaits des espaces Euclidiens, Masson, Paris, 1996.
%D J. Martinet, Perfect Lattices in Euclidean Spaces, Springer-Verlag, NY, 2003.
%D G. Nebe, Review of J. Martinet, Perfect Lattices in Euclidean Spaces, Bull. Amer. Math. Soc., 41 (No. 4, 2004), 529-533.
%H Christian Batut and Jacques Martinet, <a href="http://jamartin.perso.math.cnrs.fr/Lattices/webdesign.pdf">Lattices and spherical designs</a>, 2005-2014. See pages 12-13.
%Y Cf. A037075, A065536.
%K nonn,hard,more
%O 1,2
%A _N. J. A. Sloane_, Sep 22 2004
%E a(6) added from Batut & Martinet by _Andrey Zabolotskiy_, Feb 20 2021