384277domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes of the form m*prime(m) + (m + 1)*prime(m + 1) + (m + 2)*prime(m + 2).at n=13A268465a(1) = 4, and for any n > 1, a(n+1) is the a(n)-th squarefree number.at n=26A356398Prime numbersat n=32627