141313domain: NAppears in sequencesNumbers k such that k and k^2 use only the digits 1, 3, 4, 6 and 9.at n=31A137027Half the number of nX6 binary arrays with each element equal to at least two neighbors.at n=7A180755Half the number of nX8 binary arrays with each element equal to at least two neighbors.at n=5A180757