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

Terms

a(0) =1a(1) =-3a(2) =6a(3) =-14a(4) =34a(5) =-80a(6) =188a(7) =-444a(8) =1048a(9) =-2472a(10) =5832a(11) =-13760a(12) =32464a(13) =-76592a(14) =180704a(15) =-426336a(16) =1005856a(17) =-2373120a(18) =5598912a(19) =-13209536a(20) =31165312a(21) =-73528448a(22) =173475968a(23) =-409282560a(24) =965622016a(25) =-2278195968a(26) =5374957056a(27) =-12681158144a(28) =29918708224a(29) =-70587330560