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

Terms

a(0) =1a(1) =13a(2) =109a(3) =749a(4) =4589a(5) =26093a(6) =140781a(7) =730605a(8) =3679725a(9) =18097645a(10) =87303661a(11) =414459373a(12) =1941186029a(13) =8987616749a(14) =41199871469a(15) =187228759533a(16) =844358755821