974161domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes of the form prime(x)*prime(x+1) + (prime(x+1)-prime(x)).at n=30A140121Coefficient of x in the reduction by x^2->x+1 of the polynomial p(n,x) defined below in Comments.at n=28A192758Prime numbersat n=76655