Expansion of Sum_{k>=0} x^k / (1 - (k*x)^3)^(k+1).

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =3a(5) =25a(6) =109a(7) =324a(8) =1135a(9) =8803a(10) =64189a(11) =337854a(12) =1707319a(13) =13421410a(14) =121248893a(15) =894378619a(16) =6082868725a(17) =53046554917a(18) =543432115477