89998565

Appears in sequences

• 1/16 the number of (n+1)X5 binary arrays with no 2X2 subblock being a reflection across the shared element pair of any horizontal or vertical neighbor.at n=7A183806
• 1/16 the number of (n+1)X9 binary arrays with no 2X2 subblock being a reflection across the shared element pair of any horizontal or vertical neighbor.at n=3A183810