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

Terms

a(0) =1a(1) =3a(2) =1a(3) =11a(4) =-2a(5) =26a(6) =-10a(7) =50a(8) =-25a(9) =85a(10) =-49a(11) =133a(12) =-84a(13) =196a(14) =-132a(15) =276a(16) =-195a(17) =375a(18) =-275a(19) =495a(20) =-374a(21) =638a(22) =-494a(23) =806a(24) =-637a(25) =1001a(26) =-805a(27) =1225a(28) =-1000a(29) =1480