238573domain: NPropertiesPrimalityPrimeyesAppears in sequencesEach entry is the first of three consecutive primes with equal digital sum.at n=12A209396Primes of the form p^2 + pq + q^2, where p and q are consecutive primes.at n=12A243761a(n) = (1/2) * A241102(n).at n=3A360490Prime numbersat n=21108