"1-ply" palindromic primes; see Comments.

Terms

a(0) =2a(1) =3a(2) =5a(3) =7a(4) =100030001a(5) =100050001a(6) =100060001a(7) =100111001a(8) =100131001a(9) =100161001a(10) =100404001a(11) =100656001a(12) =100707001a(13) =100767001a(14) =100888001a(15) =100999001a(16) =101030101a(17) =101060101a(18) =101141101a(19) =101171101a(20) =101282101a(21) =101292101a(22) =101343101a(23) =101373101a(24) =101414101a(25) =101424101a(26) =101474101