536862720domain: NAppears in sequencesLargest solution of phi(x) = 2^n.at n=27A058215Number of orbits of length n under the full 16-shift (whose periodic points are counted by A001025).at n=7A060219a(n) = 6*a(n-1) - 8*a(n-2) for n > 1; a(0) = 7, a(1) = 30.at n=13A171472