Palindromic numbers which are products of an odd number of distinct primes.

Terms

a(0) =2a(1) =3a(2) =5a(3) =7a(4) =11a(5) =66a(6) =101a(7) =131a(8) =151a(9) =181a(10) =191a(11) =222a(12) =282a(13) =313a(14) =353a(15) =373a(16) =383a(17) =434a(18) =474a(19) =494a(20) =555a(21) =595a(22) =606a(23) =646a(24) =727a(25) =757a(26) =777a(27) =787a(28) =797a(29) =919