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

Terms

a(0) =3a(1) =8a(2) =20a(3) =47a(4) =109a(5) =253a(6) =588a(7) =1367a(8) =3178a(9) =7388a(10) =17175a(11) =39927a(12) =92819a(13) =215778a(14) =501623a(15) =1166132a(16) =2710928a(17) =6302143a(18) =14650705a(19) =34058757a(20) =79177004a(21) =184064203a(22) =427897358a(23) =994740672a(24) =2312491503a(25) =5375890523a(26) =12497429235a(27) =29052998162a(28) =67540026539a(29) =157011512528