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A005877
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Theta series of cubic lattice with respect to square.
(Formerly M3322)
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1
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4, 8, 8, 16, 12, 8, 24, 16, 16, 24, 16, 16, 28, 32, 8, 32, 32, 16, 40, 16, 16, 40, 40, 32, 36, 16, 24, 48, 32, 24, 40, 48, 16, 56, 32, 16, 64, 40, 32, 32, 36, 40, 48, 48, 32, 48, 48, 16, 80, 40, 24, 80
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,1
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REFERENCES
| J. H. Conway and N. J. A. Sloane, "Sphere Packings, Lattices and Groups", Springer-Verlag, p. 107.
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
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LINKS
| G. Nebe and N. J. A. Sloane, Home page for this lattice
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CROSSREFS
| a(n)=4*A045828(n).
Sequence in context: A159786 A083744 A114027 * A144174 A098354 A089474
Adjacent sequences: A005874 A005875 A005876 * A005878 A005879 A005880
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KEYWORD
| nonn,easy
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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