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) =7a(6) =13a(7) =24a(8) =55a(9) =133a(10) =301a(11) =678a(12) =1639a(13) =4120a(14) =10253a(15) =25591a(16) =65869a(17) =173551a(18) =459493a(19) =1225379a(20) =3325123a(21) =9162046a(22) =25451181a(23) =71296499a(24) =202144225a(25) =579612934a(26) =1675822453a(27) =4885178596a(28) =14376297345a(29) =42690792651