Expansion of Sum_{k>=0} k^2 * x^k/(1 + k * x).

Terms

a(0) =0a(1) =1a(2) =3a(3) =2a(4) =4a(5) =11a(6) =-13a(7) =36a(8) =56a(9) =-515a(10) =2067a(11) =-3890a(12) =-9620a(13) =129047a(14) =-664349a(15) =1837920a(16) =2388704a(17) =-67004679a(18) =478198563a(19) =-1994889926a(20) =1669470804a(21) =56929813955a(22) =-615188040173