Expansion of Sum_{k>=1} x^k/(1 + x^k)^3.

Terms

a(0) =1a(1) =-2a(2) =7a(3) =-12a(4) =16a(5) =-17a(6) =29a(7) =-48a(8) =52a(9) =-42a(10) =67a(11) =-105a(12) =92a(13) =-79a(14) =142a(15) =-184a(16) =154a(17) =-143a(18) =191a(19) =-262a(20) =266a(21) =-189a(22) =277a(23) =-441a(24) =341a(25) =-262a(26) =430a(27) =-495a(28) =436a(29) =-402