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

Terms

a(0) =1a(1) =2a(2) =2a(3) =-1a(4) =-6a(5) =-8a(6) =1a(7) =22a(8) =38a(9) =15a(10) =-66a(11) =-156a(12) =-119a(13) =170a(14) =602a(15) =671a(16) =-270a(17) =-2144a(18) =-3215a(19) =-530a(20) =6974a(21) =13935a(22) =8022a(23) =-19860a(24) =-55751a(25) =-51934a(26) =43538a(27) =206975a(28) =267306a(29) =-26744