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Number of n-dimensional determinant 3 lattices.
(Formerly M0218)
0

%I M0218 #12 Oct 26 2023 22:46:06

%S 0,1,2,2,2,2,3,3,4,5,7,8,10,13,19,24,36,53

%N Number of n-dimensional determinant 3 lattices.

%D J. H. Conway and N. J. A. Sloane, "Sphere Packings, Lattices and Groups", Springer-Verlag, p. 402.

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

%K nonn

%O 0,3

%A _N. J. A. Sloane_