A028548 Character of extremal vertex operator algebra of rank 43/2.

1, 0, 0, 5461, 81485, 822719, 5981171, 35644936, 182099840, 827892416, 3421494778, 13071040971, 46705593456, 157565735017, 505495512327, 1551275741849, 4575618361577, 13023672238682, 35891688317656, 96044494715093, 250169937122941, 635634787400407

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..21.

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 = 43/2. - Sean A. Irvine, Feb 29 2020

Crossrefs

Cf. A000700.

Sequence in context: A247715 A043580 A104111 * A069311 A258128 A022205

Adjacent sequences: A028545 A028546 A028547 * A028549 A028550 A028551

Keyword

nonn,easy

Author

N. J. A. Sloane

Extensions

More terms from Sean A. Irvine, Feb 29 2020

Status

approved