Numbers of the form 2p+1, where p and p+2 are a pair of twin primes.

Terms

a(0) =7a(1) =11a(2) =23a(3) =35a(4) =59a(5) =83a(6) =119a(7) =143a(8) =203a(9) =215a(10) =275a(11) =299a(12) =359a(13) =383a(14) =395a(15) =455a(16) =479a(17) =539a(18) =563a(19) =623a(20) =695a(21) =839a(22) =863a(23) =923a(24) =1043a(25) =1139a(26) =1199a(27) =1235a(28) =1283a(29) =1319