Primes with consecutive digits.

Terms

a(0) =2a(1) =3a(2) =5a(3) =7a(4) =23a(5) =43a(6) =67a(7) =89a(8) =109a(9) =4567a(10) =10987a(11) =76543a(12) =78901a(13) =678901a(14) =23456789a(15) =45678901