a(n) = Xpower(n,3).

Terms

a(0) =0a(1) =1a(2) =8a(3) =15a(4) =64a(5) =85a(6) =120a(7) =107a(8) =512a(9) =585a(10) =680a(11) =743a(12) =960a(13) =925a(14) =856a(15) =771a(16) =4096a(17) =4369a(18) =4680a(19) =4959a(20) =5440a(21) =5189a(22) =5944a(23) =5691a(24) =7680a(25) =8025a(26) =7400a(27) =7607a(28) =6848a(29) =7053