Primes p such that both prime(p) + prime(p+1) +/-1 are also primes.

Terms

a(0) =3a(1) =19a(2) =79a(3) =127a(4) =131a(5) =149a(6) =373a(7) =401a(8) =487a(9) =1031a(10) =1303a(11) =1427a(12) =1699a(13) =1801a(14) =2069a(15) =2477a(16) =2659a(17) =2767a(18) =3307a(19) =3391a(20) =3449a(21) =3583a(22) =3671a(23) =3727a(24) =4093a(25) =4423a(26) =4603a(27) =4817a(28) =5081a(29) =5501