G.f. A(x) satisfies: A(x) = x + 2*A(x^2) + 4*A(x^3) + 8*A(x^4) + ... + 2^(k-1)*A(x^k) + ...

Terms

a(0) =1a(1) =2a(2) =4a(3) =12a(4) =16a(5) =48a(6) =64a(7) =168a(8) =272a(9) =576a(10) =1024a(11) =2288a(12) =4096a(13) =8448a(14) =16512a(15) =33456a(16) =65536a(17) =132448a(18) =262144a(19) =526784a(20) =1049088a(21) =2101248a(22) =4194304a(23) =8399232a(24) =16777472a(25) =33570816a(26) =67110976a(27) =134252288a(28) =268435456a(29) =536942336