Primes prime(k) such that 2^(k+1) + prime(k) is also prime.

Terms

a(0) =3a(1) =31a(2) =71a(3) =97a(4) =107a(5) =277a(6) =307a(7) =641a(8) =907a(9) =967a(10) =1009a(11) =1447a(12) =3463a(13) =3527a(14) =7757a(15) =8167a(16) =250867a(17) =279047a(18) =1107791a(19) =1176671a(20) =1538399a(21) =1594909a(22) =2450017