Expansion of Sum_{k>=0} k * x^k/(1 + k * x).

Terms

a(0) =0a(1) =1a(2) =1a(3) =0a(4) =2a(5) =1a(6) =-5a(7) =20a(8) =-28a(9) =-47a(10) =525a(11) =-2056a(12) =3902a(13) =9633a(14) =-129033a(15) =664364a(16) =-1837904a(17) =-2388687a(18) =67004697a(19) =-478198544a(20) =1994889946a(21) =-1669470783a(22) =-56929813933a(23) =615188040196