18829218

Appears in sequences

• Half the number of (n+2)X5 binary arrays with each 3X3 subblock having sum 4 or 5.at n=4A186819
• Half the number of (n+2)X7 binary arrays with each 3X3 subblock having sum 4 or 5.at n=2A186821
• 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=23A186825
• 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=25A186825