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

Terms

a(0) =1a(1) =2a(2) =8a(3) =22a(4) =64a(5) =162a(6) =424a(7) =1022a(8) =2480a(9) =5770a(10) =13336a(11) =30046a(12) =67184a(13) =147554a(14) =321592a(15) =692278a(16) =1479568a(17) =3133474a(18) =6596008a(19) =13788606a(20) =28679264a(21) =59335530a(22) =122256456a(23) =250875550a(24) =513116864a(25) =1046190786a(26) =2127557592a(27) =4316282006a(28) =8739096992a(29) =17661731138