72681839domain: NPropertiesPrimalityPrimeyesAppears in sequencesSmallest prime of the form n(n-1)(n-2)...(n-k)-1, or 0 if no such prime exists.at n=20A092925a(n)= numerator of ((n + 3)! - (n - 3)!)/(n!).at n=17A127227Prime numbersat n=4266432