Expansion of Product_{k>=1} 1 / ((1-x^(3*k-1))^(3*k-1) * (1-x^(3*k-2))^(3*k-2)).

Terms

a(0) =1a(1) =1a(2) =3a(3) =3a(4) =10a(5) =15a(6) =27a(7) =44a(8) =79a(9) =128a(10) =211a(11) =331a(12) =549a(13) =843a(14) =1338a(15) =2061a(16) =3195a(17) =4851a(18) =7384a(19) =11104a(20) =16696a(21) =24774a(22) =36817a(23) =54173a(24) =79560a(25) =116067a(26) =168880a(27) =244293a(28) =352480a(29) =506012