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

Terms

a(0) =1a(1) =-2a(2) =-1a(3) =0a(4) =2a(5) =6a(6) =-3a(7) =12a(8) =-13a(9) =-2a(10) =-15a(11) =2a(12) =-65a(13) =44a(14) =37a(15) =-90a(16) =134a(17) =26a(18) =334a(19) =-270a(20) =66a(21) =18a(22) =774a(23) =-1280a(24) =-15a(25) =-2266a(26) =2627a(27) =-352a(28) =-3575a(29) =-516