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

Terms

a(0) =1a(1) =-1a(2) =2a(3) =1a(4) =3a(5) =4a(6) =12a(7) =17a(8) =35a(9) =67a(10) =127a(11) =234a(12) =451a(13) =850a(14) =1602a(15) =3031a(16) =5740a(17) =10837a(18) =20490a(19) =38751a(20) =73253a(21) =138471a(22) =261814a(23) =494972a(24) =935738a(25) =1769079a(26) =3344568a(27) =6323022a(28) =11953992a(29) =22599700