Expansion of (1 + x)/(1 - x^2*(1 + x)^3).

Terms

a(0) =1a(1) =1a(2) =1a(3) =4a(4) =7a(5) =11a(6) =23a(7) =45a(8) =81a(9) =154a(10) =296a(11) =555a(12) =1046a(13) =1986a(14) =3753a(15) =7085a(16) =13404a(17) =25348a(18) =47904a(19) =90568a(20) =171245a(21) =323728a(22) =612009a(23) =1157071a(24) =2187496a(25) =4135527a(26) =7818464a(27) =14781237a(28) =27944604a(29) =52830706