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

Terms

a(0) =1a(1) =1a(2) =0a(3) =1a(4) =-2a(5) =4a(6) =-7a(7) =11a(8) =-16a(9) =23a(10) =-36a(11) =65a(12) =-129a(13) =256a(14) =-473a(15) =772a(16) =-1028a(17) =835a(18) =776a(19) =-5755a(20) =17562a(21) =-41750a(22) =86678a(23) =-165145a(24) =299949a(25) =-541837a(26) =1020029a(27) =-2068203a(28) =4509512a(29) =-10252952