%I A005103 M2724
%S A005103 1,3,8,16,32,48,64,64
%N A005103 Minimal determinant of n-dimensional norm 3 lattice.
%C A005103 The g.f. (1+z+2*z**2+2*z**3+6*z**4)/(1-2*z+2*z**3) conjectured by S. 
               Plouffe in his 1992 dissertation is almost certainly wrong.
%D A005103 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, 
               Academic Press, 1995 (includes this sequence).
%D A005103 J. H. Conway and N. J. A. Sloane, "Sphere Packings, Lattices and Groups", 
               Springer-Verlag, p. 180.
%H A005103 S. Plouffe, <a href="http://www.lacim.uqam.ca/%7Eplouffe/articles/MasterThesis.pdf">
               Approximations de S\'{e}ries G\'{e}n\'{e}ratrices et Quelques Conjectures</
               a>, Dissertation, Universit\'{e} du Qu\'{e}bec \`{a} Montr\'{e}al, 
               1992.
%H A005103 S. Plouffe, <a href="http://www.lacim.uqam.ca/%7Eplouffe/articles/FonctionsGeneratrices.pdf">
               1031 Generating Functions and Conjectures</a>, Universit\'{e} du 
               Qu\'{e}bec \`{a} Montr\'{e}al, 1992.
%Y A005103 Sequence in context: A002624 A068039 A081661 this_sequence A001978 A077552 
               A024623
%Y A005103 Adjacent sequences: A005100 A005101 A005102 this_sequence A005104 A005105 
               A005106
%K A005103 nonn,hard
%O A005103 0,2
%A A005103 N. J. A. Sloane (njas(AT)research.att.com).