Prime(prime(n^3)).

Terms

a(0) =3a(1) =67a(2) =563a(3) =2063a(4) =5189a(5) =10861a(6) =20441a(7) =34351a(8) =54251a(9) =80917a(10) =115901a(11) =160807a(12) =217429a(13) =284633a(14) =367189a(15) =465337a(16) =580927a(17) =713347a(18) =869131a(19) =1045307a(20) =1245623a(21) =1473529a(22) =1727923a(23) =2011199a(24) =2329891a(25) =2676491a(26) =3060931a(27) =3480031a(28) =3942769a(29) =4448863