Primes with consecutive digits that differ exactly by 2.

Terms

a(0) =2a(1) =3a(2) =5a(3) =7a(4) =13a(5) =31a(6) =53a(7) =79a(8) =97a(9) =131a(10) =313a(11) =353a(12) =757a(13) =797a(14) =31357a(15) =35353a(16) =35753a(17) =35797a(18) =75353a(19) =75797a(20) =79757a(21) =97579a(22) =131357a(23) =135353a(24) =135757a(25) =353531a(26) =531353a(27) =535757a(28) =575753a(29) =579757