a(n) = (12*n + 7)^5.

Terms

a(0) =16807a(1) =2476099a(2) =28629151a(3) =147008443a(4) =503284375a(5) =1350125107a(6) =3077056399a(7) =6240321451a(8) =11592740743a(9) =20113571875a(10) =33038369407a(11) =51888844699a(12) =78502725751a(13) =115063617043a(14) =164130859375a(15) =228669389707a(16) =312079600999a(17) =418227202051a(18) =551473077343a(19) =716703146875a(20) =919358226007