95373domain: NAppears in sequencesa(n) = Sum_{ d divides n } phi(d)*2^(n/d)/(2n).at n=19A053634Continued fraction expansion of a constant x such that the n-th partial quotient equals a(n) = floor(2^n*x), with a(0)=1.at n=16A093053Number of ternary strings of length n that contain at least two 0's and at most two 1's.at n=12A338232