Primes p of the form (q^2+q+1)/3 where q is prime and (p^2+p+1)/3 is prime.

Terms

a(0) =19a(1) =127a(2) =3169a(3) =24571a(4) =698419a(5) =863497a(6) =3348577a(7) =5684257a(8) =6156169a(9) =7174987a(10) =7646437a(11) =10790137a(12) =16293691a(13) =18637669a(14) =19271071a(15) =28210267a(16) =30384919a(17) =33156901a(18) =36760501a(19) =45782227a(20) =47533141a(21) =58887991a(22) =62503981a(23) =88210519a(24) =92224441a(25) =100450747a(26) =113559769a(27) =129356767a(28) =138577237a(29) =156233617