138679domain: NPropertiesPrimalityPrimeyesAppears in sequencesSmallest of 3 consecutive prime numbers such that p1*p2*p3+d1+d2+1=average of twin prime pairs, d1(delta)=p2-p1,d2(delta)=p3-p2.at n=22A153406Primes of the form (p^2 - p*q + q^2)/3, where p and q are consecutive primes.at n=18A342706Prime numbersat n=12903