Expansion of Sum_{k>0} (x / (1 - 2 * x^k))^k.

Terms

a(0) =1a(1) =3a(2) =5a(3) =13a(4) =17a(5) =51a(6) =65a(7) =169a(8) =281a(9) =603a(10) =1025a(11) =2373a(12) =4097a(13) =8655a(14) =16685a(15) =33969a(16) =65537a(17) =134151a(18) =262145a(19) =530269a(20) =1050481a(21) =2108439a(22) =4194305a(23) =8420201a(24) =16778337a(25) =33607707a(26) =67120565a(27) =134338493a(28) =268435457a(29) =537151131