2060200domain: NAppears in sequencesNumbers k such that k and k^2 use only the digits 0, 2, 3, 4 and 6.at n=46A136883Numbers k such that k and k^2 use only the digits 0, 2, 4 and 6.at n=11A136902Numbers k such that k and k^2 use only the digits 0, 2, 4, 6 and 7.at n=34A136903