0,4
J. H. Conway and N. J. A. Sloane, "Sphere Packings, Lattices and Groups", Springer-Verlag, p. 120.
Sequence in context: A033549 A117478 A124353 this_sequence A130447 A116284 A138555
Adjacent sequences: A008431 A008432 A008433 this_sequence A008435 A008436 A008437
nonn,easy
N. J. A. Sloane (njas(AT)research.att.com).
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