240280270

Appears in sequences

• Number of (n+2)X4 binary arrays with each 3X3 subblock singular.at n=5A186045
• Number of (n+2) X 8 binary arrays with each 3 X 3 subblock singular.at n=1A186049
• T(n,k)=Number of (n+2)X(k+2) binary arrays with each 3X3 subblock singular.at n=22A186052