a(n) = (9*n + 8)^3.

Terms

a(0) =512a(1) =4913a(2) =17576a(3) =42875a(4) =85184a(5) =148877a(6) =238328a(7) =357911a(8) =512000a(9) =704969a(10) =941192a(11) =1225043a(12) =1560896a(13) =1953125a(14) =2406104a(15) =2924207a(16) =3511808a(17) =4173281a(18) =4913000a(19) =5735339a(20) =6644672a(21) =7645373a(22) =8741816a(23) =9938375a(24) =11239424a(25) =12649337a(26) =14172488a(27) =15813251a(28) =17576000a(29) =19465109