Palindromic Sophie Germain primes: both p and 2p+1 are palindromic primes.

Terms

a(0) =2a(1) =3a(2) =5a(3) =191a(4) =19391a(5) =38183a(6) =1508051a(7) =1609061a(8) =1628261a(9) =3717173a(10) =3916193a(11) =161535161a(12) =161838161a(13) =170646071a(14) =172747271a(15) =182949281a(16) =190909091a(17) =352909253a(18) =354848453a(19) =360818063a(20) =364636463a(21) =15052625051a(22) =15150805151a(23) =15253635251