Lower bound b of twin primes pairs such that b's digital reverse is also prime.

Terms

a(0) =3a(1) =5a(2) =11a(3) =17a(4) =71a(5) =101a(6) =107a(7) =149a(8) =179a(9) =191a(10) =311a(11) =347a(12) =1031a(13) =1061a(14) =1091a(15) =1151a(16) =1229a(17) =1301a(18) =1487a(19) =1619a(20) =1949a(21) =3251a(22) =3257a(23) =3299a(24) =3359a(25) =3371a(26) =3389a(27) =3467a(28) =3527a(29) =3767