172905144

Appears in sequences

• Equals two maps: number of nX6 binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal and antidiagonal neighbors in a random 0..3 nX6 array.at n=4A221289
• Equals two maps: number of 5Xn binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal and antidiagonal neighbors in a random 0..3 5Xn array.at n=5A221293