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

Terms

a(0) =1a(1) =1a(2) =1a(3) =2a(4) =5a(5) =12a(6) =27a(7) =58a(8) =122a(9) =257a(10) =549a(11) =1190a(12) =2600a(13) =5683a(14) =12367a(15) =26749a(16) =57530a(17) =123202a(18) =263115a(19) =561131a(20) =1196248a(21) =2550975a(22) =5443115a(23) =11620526a(24) =24814735a(25) =52979512a(26) =113038103a(27) =240936717a(28) =512916683a(29) =1090501249