Expansion of (1 + x)/(1 - x^3*(1 + x)^3).

Terms

a(0) =1a(1) =1a(2) =0a(3) =1a(4) =4a(5) =6a(6) =5a(7) =8a(8) =21a(9) =36a(10) =45a(11) =66a(12) =128a(13) =224a(14) =330a(15) =497a(16) =851a(17) =1452a(18) =2287a(19) =3556a(20) =5826a(21) =9693a(22) =15624a(23) =24807a(24) =40126a(25) =65737a(26) =106584a(27) =171112a(28) =276160a(29) =448980