700700domain: NAppears in sequencesNumbers k such that k and k^2 use only the digits 0, 4, 7, 8 and 9.at n=45A136959Number of (n+2) X 7 binary arrays avoiding patterns 001 and 101 in rows and columns.at n=7A202199Numbers whose set of base 10 digits is {0,7}.at n=36A204094