60553006domain: NAppears in sequencesNumbers k such that k and k^2 use only the digits 0, 3, 5 and 6.at n=9A136936Numbers k such that k and k^2 use only the digits 0, 3, 5, 6 and 7.at n=33A136937Numbers k such that k and k^2 use only the digits 0, 3, 5, 6 and 8.at n=25A136938