Expansion of Product_{k>=1} 1/(1 + x^k/(1 + x^(2*k))).

Terms

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