Expansion of (1-3*x)^3/((1-x)^4*(1-4*x)).

Terms

a(0) =1a(1) =-1a(2) =-3a(3) =-1a(4) =13a(5) =63a(6) =237a(7) =879a(8) =3357a(9) =13135a(10) =52061a(11) =207519a(12) =829037a(13) =3314719a(14) =13256973a(15) =53025423a(16) =212098557a(17) =848390319a(18) =3393556477a(19) =13574220095a(20) =54296873421a(21) =217187485439a(22) =868749932077