20020163domain: NPropertiesPrimalityPrimeyesAppears in sequencesa(n) is the least prime that starts a string of exactly n primes p_1, p_2, ... p_n where p_{i+1} = p_i-A003132(p_i), but p_n-A003132(p_n) is not prime.at n=6A342958Prime numbersat n=1271814