1778700domain: NAppears in sequencesa(n) = Product_{k=1..n} P(k), where P(k) is the smallest prime >= k.at n=8A118456Denominators of convergents to 6/Pi^2 based on 1/Zeta(s) = Sum_{k>=1} (mu(k)/k^s).at n=7A127901Numbers with prime factorization pq^2r^2s^2t^2.at n=14A190387