Expansion of Product_{m>=1} (1+m*q^m)^31.

Terms

a(0) =1a(1) =31a(2) =527a(3) =6510a(4) =65162a(5) =559271a(6) =4259276a(7) =29444575a(8) =187761854a(9) =1117650502a(10) =6267006128a(11) =33341859350a(12) =169281687755a(13) =824110662334