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A005303
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Representation degeneracies for Raymond strings.
(Formerly M1024)
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0
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1, 0, 2, 4, 6, 12, 22, 36, 62, 104, 166, 268, 426, 660, 1022, 1564, 2358, 3540, 5266, 7756, 11362, 16524, 23854, 34252, 48890, 69368, 97942, 137588, 192314, 267628, 370798, 511524, 702886
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OFFSET
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0,3
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REFERENCES
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T. L. Curtright and C. B. Thorn, Symmetry patterns in the mass spectra of dual string models, Nuclear Phys. B 274 (1986), 520-588.
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
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LINKS
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Table of n, a(n) for n=0..32.
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FORMULA
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G.f.: Product (1 - x^k)^(-c(k)), c(k) = 0, 2, 4, 3, 4, 2, 4, 2, 4, 2, ....
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CROSSREFS
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Sequence in context: A105536 A073660 A102588 * A057575 A196700 A135231
Adjacent sequences: A005300 A005301 A005302 * A005304 A005305 A005306
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KEYWORD
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nonn,easy
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AUTHOR
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N. J. A. Sloane.
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STATUS
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approved
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