2763053domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes p such that (p^2 + 5)/6, (p^4 + 5)/6 and (p^6 + 5)/6 are prime.at n=22A253939Number of set partitions of [n] such that no part contains two elements with a circular distance less than three.at n=14A261478Prime numbersat n=200882