Primes p such that 2p-1 is a square and 2p+1 is also prime.

Terms

a(0) =5a(1) =41a(2) =113a(3) =761a(4) =1013a(5) =14621a(6) =23981a(7) =47741a(8) =51521a(9) =59513a(10) =70313a(11) =97241a(12) =185441a(13) =244301a(14) =252761a(15) =335381a(16) =391613a(17) =413141a(18) =481181a(19) =511061a(20) =695021a(21) =859361a(22) =883121a(23) =1278401a(24) =1336613a(25) =1529501a(26) =1746581a(27) =1872113a(28) =2111513a(29) =2161121