102131domain: NAppears in sequencesNumber of points in N^n of norm <= 2.at n=40A055417Products p*q*r of three distinct primes such that s=(p*q) mod r, t=(p*r) mod q and u=(q*r) mod p, and s+t+u are all prime.at n=21A338705Products of sexy prime triples: sphenic numbers with prime factorization (p - 6)*p*(p + 6).at n=5A366867