
REFERENCES

J. W. S. Cassels, An Introduction to the Geometry of Numbers. SpringerVerlag, NY, 2nd ed., 1971, p. 332.
J. H. Conway and N. J. A. Sloane, "Sphere Packings, Lattices and Groups", SpringerVerlag, p. 20.
P. M. Gruber and C. G. Lekkerkerker, Geometry of Numbers, NorthHolland, Amsterdam, 2nd ed., 1987, p. 410.
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).


EXAMPLE

1, 4/3, 2, 4, 8, 64/3, 64, 256, ... = A007361/A007362
