Expansion of Product_{m>=1} (1-m*q^m)^25.

Terms

a(0) =1a(1) =-25a(2) =250a(3) =-1125a(4) =625a(5) =15495a(6) =-54375a(7) =-20625a(8) =413325a(9) =-246425a(10) =-1719150a(11) =-854425a(12) =11885650a(13) =13624250a(14) =-73600100a(15) =-65950175a(16) =191784500a(17) =512802500a(18) =23353075a(19) =-2854336325a(20) =-2372290275a(21) =4919896900a(22) =19737007600