Primes p such that (2^p - 2^((p+1)/2) + 1)/5 is prime.

Terms

a(0) =5a(1) =11a(2) =13a(3) =29a(4) =43a(5) =53a(6) =283a(7) =557a(8) =563a(9) =613a(10) =691a(11) =2731a(12) =5147a(13) =5323a(14) =9533a(15) =10771a(16) =221891a(17) =235099a(18) =305867a(19) =311027a(20) =333227a(21) =792061a(22) =1347781a(23) =1669219a(24) =1882787a(25) =2305781