51525

Appears in sequences

• Number of dissections of a convex n-gon by nonintersecting diagonals into an odd number of regions.at n=8A100300
• The number of P-positions in the game of Nim with up to 5 piles, allowing for piles of zero, such that the number of objects in the largest pile is n.at n=34A241731
• Number of ways to place 4 points on an n X n square grid so that no more than 2 points are on a vertical or horizontal straight line.at n=5A279438
• Triangle read by rows: T(n, k) is the number of ways to place k points on an n X n square grid so that no more than 2 points are on a vertical or horizontal straight line.at n=38A279445