Primes p such that phi(p-3) = phi(phi(p-2)-1).

Terms

a(0) =5a(1) =7a(2) =11a(3) =17a(4) =19a(5) =59a(6) =127a(7) =227a(8) =257a(9) =647a(10) =971a(11) =3259a(12) =3929a(13) =4721a(14) =5531a(15) =6869a(16) =11719a(17) =18097a(18) =22511a(19) =25847a(20) =40037a(21) =53987a(22) =65027a(23) =65537a(24) =65539a(25) =65699a(26) =76667a(27) =80279a(28) =195659a(29) =307399