3612673domain: NPropertiesPrimalityPrimeyesAppears in sequencesLet (p1,p2), (p3,p4) be pairs of twin primes with p1*p2=p3+p4-1; sequence gives values of p4.at n=9A047979Primes obtained as the product of successive terms of A084039 + 1, i.e., a(n) = A084039(n)*A084039(n+1) + 1.at n=28A084040Prime numbersat n=257598