338841141domain: NAppears in sequencesNumbers k such that k and k^2 use only the digits 1, 3, 4, 5 and 8.at n=26A137022Numbers k such that k and k^2 use only the digits 1, 3, 4, 7 and 8.at n=20A137028Numbers k such that k and k^2 use only the digits 1, 3, 4 and 8.at n=3A137030