Expansion of Product_{k>=1} (1 + x^k)^(6^(k-1)).

Terms

a(0) =1a(1) =1a(2) =6a(3) =42a(4) =267a(5) =1743a(6) =11234a(7) =72470a(8) =466251a(9) =2996883a(10) =19234836a(11) =123315828a(12) =789682546a(13) =5051601010a(14) =32282443044a(15) =206104519572