Expansion of Product_{k>=1} ((1 - k*x^k)/(1 + k*x^k)).

Terms

a(0) =1a(1) =-2a(2) =-2a(3) =0a(4) =6a(5) =8a(6) =0a(7) =4a(8) =-10a(9) =-50a(10) =-36a(11) =16a(12) =12a(13) =80a(14) =44a(15) =88a(16) =390a(17) =180a(18) =-94a(19) =-712a(20) =-1624a(21) =-312a(22) =-688a(23) =1476a(24) =4444a(25) =-6954a(26) =-5812a(27) =3816a(28) =7728a(29) =36600