56271domain: NAppears in sequencesa(n) = floor(exp(1/3)*n!).at n=7A030977Numbers n such that 9*10^n + 7*R_n - 4 is prime, where R_n = 11...1 is the repunit (A002275) of length n.at n=12A103106a(n) = least semiprime such that all subsets of {a(1),...,a(n)} have a different sum.at n=15A137371