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A028540 Character of extremal vertex operator algebra of rank 17.5. 0
1, 0, 0, 7385, 28315, 427987, 1398635, 10063590, 30106965, 148903370, 415546516, 1630361950, 4294071285, 14375319490, 36019030960, 107362236457, 257518347380, 702230132030, 1620548828150, 4117804435185, 9180947306314, 22023446814405, 47606945661555 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,4

REFERENCES

G. Höhn, Selbstduale Vertexoperatorsuperalgebren und das Babymonster, Bonner Mathematische Schriften, Vol. 286 (1996), 1-85.

LINKS

Table of n, a(n) for n=0..22.

G. Höhn (gerald(AT)math.ksu.edu), Selbstduale Vertexoperatorsuperalgebren und das Babymonster, Doctoral Dissertation, Univ. Bonn, Jul 15 1995 (pdf, ps).

FORMULA

G.f.: x^(2*r/24) * (B(x)^(2*r) - 2*r*B(x)^(2*r-24) - r*(47-2*r)*B(x)^(2*r-48) where B(x) = x^(-1/24) * Product_{k>=0} (1+x^(2*k+1)) = x^(-1/24) * A000700 and r = 35/2. - Sean A. Irvine, Feb 29 2020

CROSSREFS

Cf. A000700.

Sequence in context: A328663 A022255 A189504 * A206202 A034279 A031584

Adjacent sequences:  A028537 A028538 A028539 * A028541 A028542 A028543

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane.

EXTENSIONS

More terms from Sean A. Irvine, Feb 29 2020

STATUS

approved

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Last modified July 4 05:54 EDT 2020. Contains 335444 sequences. (Running on oeis4.)