90000000019domain: NAppears in sequencesStart with the prime 11; next prime must exceed previous prime and start with last digit of previous prime.at n=23A054262a(1) = 2; a(n+1) = smallest prime > a(n) with leading digit equal to final digit of a(n).at n=23A061448Smallest prime in which the n-th significant digit is a 9.at n=10A069593