192601domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes p such that q=2*p^2-1, r=2*p*q-1 and 2*p*r-1 are also prime.at n=7A224991Number of subsets of {1,..,n} of cardinality >= 2 such that the elements of each counted subset are pairwise coprime.at n=37A276187Prime numbersat n=17379