Expansion of (1-4x)/(1-x^2+x^3).

Terms

a(0) =1a(1) =-4a(2) =1a(3) =-5a(4) =5a(5) =-6a(6) =10a(7) =-11a(8) =16a(9) =-21a(10) =27a(11) =-37a(12) =48a(13) =-64a(14) =85a(15) =-112a(16) =149a(17) =-197a(18) =261a(19) =-346a(20) =458a(21) =-607a(22) =804a(23) =-1065a(24) =1411a(25) =-1869a(26) =2476a(27) =-3280a(28) =4345a(29) =-5756