354042domain: NAppears in sequencesNumbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 70.at n=16A031748a(n) = 289*n^2 + 17.at n=35A158585Number of orthogonal rectangles with vertices on an n X n square grid of points but with no vertices on the grid's diagonals.at n=37A285956