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

Terms

a(0) =1a(1) =1a(2) =1a(3) =3a(4) =3a(5) =4a(6) =8a(7) =9a(8) =11a(9) =19a(10) =22a(11) =27a(12) =42a(13) =49a(14) =60a(15) =87a(16) =102a(17) =124a(18) =172a(19) =202a(20) =244a(21) =326a(22) =383a(23) =460a(24) =598a(25) =702a(26) =838a(27) =1066a(28) =1249a(29) =1483