121460

Appears in sequences

• Number of ways to place 3 nonattacking nightriders on a 3 X n board.at n=31A172218
• Number of regions among all distinct circles that can be constructed from the 4 vertices and the equally spaced 4*n points placed on the sides of a square when every pair of the 4 + 4*n points are connected by a circle and where the points lie at the ends of the circle's diameter.at n=8A373107