Prime(p^3) where p = prime(n).

Terms

a(0) =19a(1) =103a(2) =691a(3) =2309a(4) =10957a(5) =19403a(6) =47657a(7) =69031a(8) =130073a(9) =279431a(10) =347707a(11) =620531a(12) =867677a(13) =1013609a(14) =1353887a(15) =1999121a(16) =2829503a(17) =3152099a(18) =4268039a(19) =5145347a(20) =5628457a(21) =7258871a(22) =8510507a(23) =10651117a(24) =14042671a(25) =15986303a(26) =17023271a(27) =19235537a(28) =20411623a(29) =22909613