2199181domain: NPropertiesPrimalityPrimeyesAppears in sequencesa(n) = (1/s(1) + 1/s(2) + ... + 1/s(n+1)) * LCM{1, 2, ..., n}, where s(k) = LCM{1,2,...,k}/k = A002944(k).at n=16A025537Prime numbersat n=162614