56422648

Appears in sequences

• Half the number of (n+2)X4 binary arrays with each 3X3 subblock having sum 4 or 5.at n=6A186818
• Half the number of (n+2)X9 binary arrays with each 3X3 subblock having sum 4 or 5.at n=1A186823
• T(n,k)=Half the number of (n+2)X(k+2) binary arrays with each 3X3 subblock having sum 4 or 5.at n=29A186825