a(n) = (11*n + 1)^3.

Terms

a(0) =1a(1) =1728a(2) =12167a(3) =39304a(4) =91125a(5) =175616a(6) =300763a(7) =474552a(8) =704969a(9) =1000000a(10) =1367631a(11) =1815848a(12) =2352637a(13) =2985984a(14) =3723875a(15) =4574296a(16) =5545233a(17) =6644672a(18) =7880599a(19) =9261000a(20) =10793861a(21) =12487168a(22) =14348907a(23) =16387064a(24) =18609625a(25) =21024576a(26) =23639903a(27) =26463592a(28) =29503629a(29) =32768000