466608domain: NAppears in sequencesa(n) = ceiling(a(n-1)*3/2) with a(1) = 1.at n=31A061419Number of numbers whose base-3/2 expansion (see A024629) has n digits.at n=31A081848Initial values for f(x)=phi(sigma(x)) such that iteration of f ends in a cycle of length 18.at n=5A096890