608981813819domain: NAppears in sequencesWhere the prime race 3k-1 vs. 3k+1 changes leader.at n=4A007352Odd primes p such that Pi_{3,1}(p) = Pi_{3,2}(p) - 1, where Pi_{m,n}(p) denotes the number of primes q <= p with q == n (mod m).at n=15A098044