"3-ply" palindromic primes.

Terms

a(0) =10000500001a(1) =10000900001a(2) =10001610001a(3) =10002220001a(4) =10002520001a(5) =10003630001a(6) =10006560001a(7) =10008180001a(8) =10009290001a(9) =10013031001a(10) =10013131001a(11) =10014741001a(12) =10016961001a(13) =10021512001