2349390domain: NAppears in sequencesa(n) is the minimal values of A007947((2^n)*m*(2^n-m)).at n=26A143702Numbers k such that k and k+1 have the same denominator of the harmonic means of their divisors.at n=35A348415Numbers k such that k and k+1 have the same denominator of the harmonic means of their unitary divisors.at n=27A348657