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

Terms

a(0) =1a(1) =0a(2) =1a(3) =1a(4) =-4a(5) =14a(6) =-35a(7) =77a(8) =-161a(9) =356a(10) =-873a(11) =2267a(12) =-5787a(13) =13850a(14) =-30361a(15) =59934a(16) =-103754a(17) =147968a(18) =-139049a(19) =-58998a(20) =730972a(21) =-2430881a(22) =6333238a(23) =-15548722a(24) =39845197a(25) =-110775861a(26) =325257904a(27) =-960503811a(28) =2756222486a(29) =-7568564555