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

Terms

a(0) =1a(1) =0a(2) =2a(3) =-1a(4) =5a(5) =-11a(6) =36a(7) =-107a(8) =311a(9) =-850a(10) =2208a(11) =-5519a(12) =13566a(13) =-33562a(14) =84937a(15) =-220307a(16) =579413a(17) =-1522616a(18) =3954016a(19) =-10100863a(20) =25416877a(21) =-63324271a(22) =157248035a(23) =-391478354a(24) =980410093a(25) =-2470810086a(26) =6253495883a(27) =-15846525758a(28) =40093721908a(29) =-101116823798