107099domain: NPropertiesPrimalityPrimeyesAppears in sequencesNumbers m such that m-2, m-1, m+1, m+2 cannot all be represented in the form x*y + x + y for values x, y with x >= y > 1.at n=19A256386Primes of the form prime(i)*prime(i+1)+prime(i+2)*prime(i+3)+...+prime(k-1)*prime(k).at n=25A340465Prime numbersat n=10207