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

Terms

a(0) =1a(1) =-2a(2) =0a(3) =2a(4) =2a(5) =-6a(6) =-2a(7) =10a(8) =6a(9) =-22a(10) =-10a(11) =42a(12) =22a(13) =-86a(14) =-42a(15) =170a(16) =86a(17) =-342a(18) =-170a(19) =682a(20) =342a(21) =-1366a(22) =-682a(23) =2730a(24) =1366a(25) =-5462a(26) =-2730a(27) =10922a(28) =5462a(29) =-21846