Primes p such that p = prime(n+3)=(prime(n+6)+prime(n))/2.

Terms

a(0) =11a(1) =29a(2) =31a(3) =41a(4) =71a(5) =211a(6) =251a(7) =349a(8) =439a(9) =461a(10) =751a(11) =1031a(12) =1051a(13) =1289a(14) =1291a(15) =1609a(16) =1667a(17) =1723a(18) =2113a(19) =2417a(20) =2423a(21) =2503a(22) =2579a(23) =2711a(24) =2903a(25) =3079a(26) =3919a(27) =3967a(28) =4153a(29) =4271