-44016domain: ZAppears in sequencesE.g.f.: high-temperature series in J/2kT for logarithm of partition function for the spin-1/2 linear (1D) Heisenberg model.at n=6A002164Expansion of Product_{k>=1} 1/(1 + x^k)^(k*(3*k-1)/2).at n=19A295086