68225

Appears in sequences

• Count of interior bounded regions in a regular 2n-sided polygon dissected by all diagonals parallel to sides.at n=23A165217
• Equals one maps: number of 2 X n binary arrays indicating the locations of corresponding elements equal to exactly one of their horizontal, diagonal and antidiagonal neighbors in a random 0..1 2 X n array.at n=11A220538
• The number of tiles inside a regular n-gon created by diagonals that run from each of the n vertices to the n-2 midpoints of opposite edges.at n=23A320422