Palindromic prime numbers == 4 (mod 9).

Terms

a(0) =373a(1) =787a(2) =12721a(3) =14341a(4) =18481a(5) =30703a(6) =31513a(7) =32323a(8) =34843a(9) =37273a(10) =38083a(11) =73237a(12) =74047a(13) =77377a(14) =93739a(15) =97879a(16) =98689a(17) =1035301a(18) =1043401a(19) =1092901a(20) =1117111a(21) =1190911a(22) =1215121a(23) =1280821a(24) =1338331a(25) =1362631a(26) =1411141a(27) =1444441a(28) =1452541a(29) =1469641