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

Terms

a(0) =0a(1) =1a(2) =3a(3) =5a(4) =10a(5) =16a(6) =28a(7) =45a(8) =75a(9) =121a(10) =198a(11) =320a(12) =520a(13) =841a(14) =1363a(15) =2205a(16) =3570a(17) =5776a(18) =9348a(19) =15125a(20) =24475a(21) =39601a(22) =64078a(23) =103680a(24) =167760a(25) =271441a(26) =439203a(27) =710645a(28) =1149850a(29) =1860496