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A028533
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Character of extremal vertex operator algebra of rank 15/2.
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0
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1, 0, 275, 2325, 13250, 60630, 235500, 811950, 2558550, 7502125, 20713510, 54345125, 136483650, 329961125, 771284875, 1749490890, 3862641750, 8322360225, 17536187350, 36204137500, 73353404405, 146061623625, 286183499150, 552361219750, 1051231017125
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OFFSET
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0,3
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REFERENCES
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G. Hoehn, Selbstduale Vertexoperatorsuperalgebren und das Babymonster, Bonner Mathematische Schriften, Vol. 286 (1996), 1-85.
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LINKS
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G. Hoehn (gerald(AT)math.ksu.edu), Selbstduale Vertexoperatorsuperalgebren und das Babymonster, Doctoral Dissertation, Univ. Bonn, Jul 15 1995 (pdf, ps).
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FORMULA
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G.f.: x^(2*r/24) * (B(x)^(2*r) - 2*r*B(x)^(2*r-24) where B(x) = x^(-1/24) * Product_{k>=0} (1+x^(2*k+1)) = x^(-1/24) * A000700 and r = 25/2. - Sean A. Irvine, Feb 29 2020
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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