a(n) = n^3*tau(n).

Terms

a(0) =1a(1) =16a(2) =54a(3) =192a(4) =250a(5) =864a(6) =686a(7) =2048a(8) =2187a(9) =4000a(10) =2662a(11) =10368a(12) =4394a(13) =10976a(14) =13500a(15) =20480a(16) =9826a(17) =34992a(18) =13718a(19) =48000a(20) =37044a(21) =42592a(22) =24334a(23) =110592a(24) =46875a(25) =70304a(26) =78732a(27) =131712a(28) =48778a(29) =216000