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

Terms

a(0) =1a(1) =0a(2) =2a(3) =-2a(4) =2a(5) =1a(6) =2a(7) =-12a(8) =11a(9) =11a(10) =2a(11) =-49a(12) =2a(13) =57a(14) =108a(15) =-200a(16) =2a(17) =40a(18) =2a(19) =-391a(20) =780a(21) =1013a(22) =2a(23) =-5423a(24) =627a(25) =4083a(26) =6644a(27) =-4453a(28) =2a(29) =-5043