0,2
J. H. Conway and N. J. A. Sloane, "Sphere Packings, Lattices and Groups", Springer-Verlag, p. 180.
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
Sequence in context: A101083 A097935 A109870 this_sequence A030241 A062750 A065686
Adjacent sequences: A005099 A005100 A005101 this_sequence A005103 A005104 A005105
nonn
N. J. A. Sloane (njas(AT)research.att.com).
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