Expansion of 1/(1 - x) * Product_{k>=0} 1/(1 - x^(3^k))^(3^(k+1)).

Terms

a(0) =1a(1) =4a(2) =10a(3) =29a(4) =71a(5) =146a(6) =309a(7) =615a(8) =1119a(9) =2068a(10) =3709a(11) =6289a(12) =10793a(13) =18206a(14) =29513a(15) =48201a(16) =77757a(17) =121668a(18) =191257a(19) =297847a(20) =452761a(21) =690524a(22) =1045661a(23) =1552697a(24) =2310786a(25) =3419082a(26) =4976739a(27) =7254407a(28) =10522736a(29) =15052376