%I M0499 #11 Oct 26 2023 22:46:29
%S 0,1,1,2,3,4,5,6,7,10,13,16,22
%N Number of n-dimensional determinant 4 lattices.
%D J. H. Conway and N. J. A. Sloane, Low-dimensional lattices I: quadratic forms of small determinant, Proc. Royal Soc. London, A 418 (1988), 17-41.
%D N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
%K nonn
%O 0,4
%A _N. J. A. Sloane_