Expansion of Product_{m>=1} (1+m*q^m)^-15.

Terms

a(0) =1a(1) =-15a(2) =90a(3) =-275a(4) =555a(5) =-1653a(6) =6185a(7) =-14745a(8) =27390a(9) =-77370a(10) =222210a(11) =-454050a(12) =935885a(13) =-2388795a(14) =5531835a(15) =-11402626a(16) =24305100a(17) =-53821020a(18) =117704765a(19) =-244275885a(20) =494231898a(21) =-1048892855a(22) =2216119785a(23) =-4418663160a(24) =8855734025