48026domain: NAppears in sequencesNumbers whose base-6 representation has exactly 7 runs.at n=26A043615Numbers k such that 3*R_(k+2) + 2*10^k is prime, where R_k = 11...1 is the repunit (A002275) of length k.at n=26A256788Numbers that can be written as the sum of four or more consecutive squares in more than one way.at n=37A307937