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

Terms

a(0) =1a(1) =-1a(2) =-1a(3) =1a(4) =3a(5) =-3a(6) =-5a(7) =5a(8) =11a(9) =-11a(10) =-21a(11) =21a(12) =43a(13) =-43a(14) =-85a(15) =85a(16) =171a(17) =-171a(18) =-341a(19) =341a(20) =683a(21) =-683a(22) =-1365a(23) =1365a(24) =2731a(25) =-2731a(26) =-5461a(27) =5461a(28) =10923a(29) =-10923