Primes one less than the sum over a sexy prime pair.

Terms

a(0) =19a(1) =31a(2) =67a(3) =79a(4) =127a(5) =139a(6) =151a(7) =199a(8) =211a(9) =307a(10) =547a(11) =619a(12) =739a(13) =751a(14) =919a(15) =1087a(16) =1231a(17) =1459a(18) =1471a(19) =1759a(20) =1987a(21) =2131a(22) =2179a(23) =2239a(24) =2251a(25) =2467a(26) =2647a(27) =2851a(28) =2971a(29) =3319