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

Terms

a(0) =1a(1) =1a(2) =3a(3) =10a(4) =25a(5) =70a(6) =182a(7) =476a(8) =1220a(9) =3122a(10) =7883a(11) =19794a(12) =49340a(13) =122237a(14) =301114a(15) =737923a(16) =1799597a(17) =4369204a(18) =10563800a(19) =25441377a(20) =61048713a(21) =145988775a(22) =347981713a(23) =826921992a(24) =1959363778a(25) =4629903905a(26) =10911757432a(27) =25652950459a(28) =60165831361a(29) =140792215037