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

Terms

a(0) =1a(1) =25a(2) =350a(3) =3625a(4) =30825a(5) =227005a(6) =1495225a(7) =8998625a(8) =50231225a(9) =262982425a(10) =1302361670a(11) =6141852925a(12) =27731605150a(13) =120415590250a(14) =504692324800