Primes p such that p1 = ceiling(p/2) + p is prime and p2 = floor(p1/2) + p1 is prime.

Terms

a(0) =3a(1) =19a(2) =67a(3) =307a(4) =379a(5) =467a(6) =547a(7) =587a(8) =739a(9) =859a(10) =1259a(11) =1699a(12) =1747a(13) =1867a(14) =2027a(15) =2699a(16) =2819a(17) =3259a(18) =3539a(19) =4019a(20) =4507a(21) =5059a(22) =5779a(23) =7547a(24) =8219a(25) =8539a(26) =8747a(27) =8819a(28) =9547a(29) =10067