a(n) = (12*n + 5)^3.

Terms

a(0) =125a(1) =4913a(2) =24389a(3) =68921a(4) =148877a(5) =274625a(6) =456533a(7) =704969a(8) =1030301a(9) =1442897a(10) =1953125a(11) =2571353a(12) =3307949a(13) =4173281a(14) =5177717a(15) =6331625a(16) =7645373a(17) =9129329a(18) =10793861a(19) =12649337a(20) =14706125a(21) =16974593a(22) =19465109a(23) =22188041a(24) =25153757a(25) =28372625a(26) =31855013a(27) =35611289a(28) =39651821a(29) =43986977