Expansion of Product_{m>=1} (1 + m*q^m)^-4.

Terms

a(0) =1a(1) =-4a(2) =2a(3) =0a(4) =27a(5) =-36a(6) =14a(7) =-104a(8) =209a(9) =-392a(10) =670a(11) =-728a(12) =2278a(13) =-4444a(14) =4808a(15) =-9800a(16) =21750a(17) =-35604a(18) =51906a(19) =-91120a(20) =176285a(21) =-290444a(22) =455168a(23) =-741336a(24) =1372544a(25) =-2419348a(26) =3490310a(27) =-5765744a(28) =10788815a(29) =-17086420