Palindromic primes with strictly decreasing digits up to the middle and then strictly increasing.

Terms

a(0) =2a(1) =3a(2) =5a(3) =7a(4) =11a(5) =101a(6) =313a(7) =727a(8) =757a(9) =919a(10) =929a(11) =31013a(12) =73037a(13) =73237a(14) =74047a(15) =76367a(16) =91019a(17) =93139a(18) =93239a(19) =94049a(20) =94349a(21) =96269a(22) =96469a(23) =97379a(24) =97579a(25) =98389a(26) =98689a(27) =7310137a(28) =7521257a(29) =7540457