53542288799domain: NAppears in sequencesa(n) is the smallest prime of the form k*lcm(1..n) - 1.at n=24A083685a(n) is the smallest prime of the form k*lcm(1..n) - 1.at n=25A083685Numbers n such that sigma(n)*7 < sigma(n-1) + sigma(n+1).at n=3A227387