Expansion of (Product_{j>=1} (1-(-x)^j) - 1)^4 in powers of x.

Terms

a(0) =1a(1) =-4a(2) =6a(3) =-4a(4) =-3a(5) =12a(6) =-16a(7) =16a(8) =-6a(9) =-8a(10) =18a(11) =-28a(12) =26a(13) =-20a(14) =2a(15) =12a(16) =-23a(17) =32a(18) =-36a(19) =28a(20) =-6a(21) =4a(22) =22a(23) =-20a(24) =39a(25) =-32a(26) =32a(27) =-12a(28) =2a(29) =16