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A028530
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Character of extremal vertex operator algebra of rank 21/2.
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0
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1, 0, 273, 1225, 6699, 24276, 83727, 249273, 706251, 1849449, 4634679, 11043102, 25418694, 56429226, 121771023, 255577105, 524104602, 1051048467, 2067033325, 3990581847, 7577271786, 14163504079, 26096985684, 47437304901, 85152306694, 151047652140, 264977541885
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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 = 21/2. - 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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