A028528 - OEIS

%I #11 Feb 29 2020 17:36:04

%S 1,0,266,703,4997,13091,49989,122474,360753,828400,2087644,4524014,

%T 10306531,21258834,45004122,88974283,178190303,339675540,650850434,

%U 1202008572,2221390339,3990403142,7153670354,12539899946,21903187213,37568267009,64150343834

%N Character of extremal vertex operator algebra of rank 19/2.

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

%H G. Hoehn (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) where B(x) = x^(-1/24) * Product_{k>=0} (1+x^(2*k+1)) = x^(-1/24) * A000700 and r = 19/2. - _Sean A. Irvine_, Feb 29 2020

%K nonn,easy

%O 0,3

%A _N. J. A. Sloane_.

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