Expansion of Product_{k>=1} (1 + (2^k - 1) * x^k).

Terms

a(0) =1a(1) =1a(2) =3a(3) =10a(4) =22a(5) =67a(6) =160a(7) =433a(8) =986a(9) =2774a(10) =6386a(11) =16214a(12) =39201a(13) =95868a(14) =229644a(15) =569707a(16) =1324730a(17) =3186326a(18) =7664378a(19) =17955006a(20) =42497434a(21) =100710158a(22) =235492595a(23) =549267552a(24) =1288847672a(25) =2990756088a(26) =6958113345a(27) =16148883002a(28) =37286262238a(29) =85880711282