Palindromic primes with exactly three nonzero digits.

Terms

a(0) =131a(1) =151a(2) =181a(3) =191a(4) =313a(5) =353a(6) =373a(7) =383a(8) =727a(9) =757a(10) =787a(11) =797a(12) =919a(13) =929a(14) =10301a(15) =10501a(16) =10601a(17) =30103a(18) =30203a(19) =30403a(20) =30703a(21) =30803a(22) =70207a(23) =70507a(24) =70607a(25) =90709a(26) =1003001a(27) =1008001a(28) =3001003a(29) =3002003