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 A028541 Character of extremal vertex operator algebra of rank 18. 0

%I

%S 1,0,0,7176,36405,451152,1850520,11430360,40829508,180254320,

%T 578006136,2083510440,6126245505,19249667568,52694220240,149784377808,

%U 386132988195,1016209016640,2489040955848,6159593155680,14435004725811,33958887040560,76572044994960

%N Character of extremal vertex operator algebra of rank 18.

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

%H G. Höhn (gerald(AT)math.ksu.edu), Selbstduale Vertexoperatorsuperalgebren und das Babymonster, Doctoral Dissertation, Univ. Bonn, Jul 15 1995 (<a href="http://www.math.ksu.edu/~gerald/papers/dr.pdf">pdf</a>, <a href="http://www.math.ksu.edu/~gerald/papers/dr.ps.gz">ps</a>).

%F 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 = 18. - _Sean A. Irvine_, Feb 29 2020

%Y Cf. A000700.

%K nonn,easy

%O 0,4

%A _N. J. A. Sloane_

%E More terms from _Sean A. Irvine_, Feb 29 2020

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Last modified August 14 10:58 EDT 2022. Contains 356116 sequences. (Running on oeis4.)