333314

Appears in sequences

• Number of n X 2 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,4,0,0,1 for x=0,1,2,3,4.at n=11A197092
• Number of (n+6)X(n+6) 0..1 matrices with each 7X7 subblock idempotent.at n=15A224580