Dirichlet g.f.: 1 / zeta(s-3).

Terms

a(0) =1a(1) =-8a(2) =-27a(3) =0a(4) =-125a(5) =216a(6) =-343a(7) =0a(8) =0a(9) =1000a(10) =-1331a(11) =0a(12) =-2197a(13) =2744a(14) =3375a(15) =0a(16) =-4913a(17) =0a(18) =-6859a(19) =0a(20) =9261a(21) =10648a(22) =-12167a(23) =0a(24) =0a(25) =17576a(26) =0a(27) =0a(28) =-24389a(29) =-27000