OFFSET
1,2
REFERENCES
J. H. Conway, The Sensual (Quadratic) Form, M.A.A., 1997, p. 82.
LINKS
N. J. A. Sloane et al., Binary Quadratic Forms and OEIS (Index to related sequences, programs, references)
PROG
(Magma) L:=LatticeWithGram(2, [4, 1, 1, 8] ); T<q> := ThetaSeries(L, 500); T;
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Sep 27 2006
STATUS
approved