Primes which are sandwiched between two numbers having the same unordered canonical form.

Terms

a(0) =19a(1) =307a(2) =349a(3) =491a(4) =739a(5) =919a(6) =1013a(7) =1061a(8) =1277a(9) =1667a(10) =1747a(11) =2357a(12) =2683a(13) =3259a(14) =3581a(15) =3797a(16) =3943a(17) =4013a(18) =4597a(19) =4877a(20) =4987a(21) =5051a(22) =5741a(23) =6067a(24) =7757a(25) =9349a(26) =9413a(27) =9739a(28) =9851a(29) =9923