123214

Appears in sequences

• Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 54.at n=12A031732
• McKay-Thompson series of class 26a for Monster.at n=41A058598
• a(n) = 169*n^2 + 13.at n=27A158548
• Number 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=29A285956
• Number of fully anti-transitive rooted trees with n nodes.at n=15A324768