0,2

Arises from counting coverings of a genus g=2 Riemann surface - expansion of generating function A_g(q) = sum_{n>=0} a_{n,g} q^n where a_{n,g} = sum_{mu a partition of n} (f^mu/n!)^{2-2g}; note that A_0(q) = e^q and A_1(q) = prod_{i>=1} 1/(1-q^i)

Sequence in context: A092366 A022519 A138439 this_sequence A145921 A100399 A022504

Adjacent sequences: A026842 A026843 A026844 this_sequence A026846 A026847 A026848

nonn

Bruce Sagan (sagan(AT)math.msu.edu), Apr 06 2002