4194282domain: NAppears in sequencesa(n) = 2^n - n.at n=22A000325a(n) = ceiling(n^(1/n))^n - n.at n=21A076878a(n) = 2^(2*n) - 2*n.at n=11A1001032^phi(n) - phi(n).at n=22A243306