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

Terms

a(0) =1a(1) =1a(2) =1a(3) =0a(4) =-2a(5) =-5a(6) =-8a(7) =-9a(8) =-5a(9) =7a(10) =28a(11) =54a(12) =73a(13) =64a(14) =1a(15) =-135a(16) =-335a(17) =-536a(18) =-602a(19) =-333a(20) =472a(21) =1879a(22) =3619a(23) =4887a(24) =4276a(25) =46a(26) =-9071a(27) =-22464a(28) =-35903a(29) =-40271