280852

Appears in sequences

• Expansion of 1/(1-x/(1+x/(1-x/(1-x/(1+x/(1-x/(1-x/(1+x/(1-... (continued fraction).at n=25A168505
• Half the number of nX4 binary arrays with no element equal to a strict majority of its knight-move neighbors.at n=8A183395
• Number of (n+1)X(4+1) 0..3 arrays with no element unequal to a strict majority of its horizontal, diagonal and antidiagonal neighbors, with values 0..3 introduced in row major order.at n=7A231460
• Starts of runs of 3 consecutive factorial base Niven numbers (A118363).at n=33A328206