425802

Appears in sequences

• Half the number of (n+1)X4 binary arrays with no 2X2 subblock containing exactly one 1.at n=4A184191
• Half the number of (n+1)X6 binary arrays with no 2X2 subblock containing exactly one 1.at n=2A184193
• T(n,k)=Half the number of (n+1)X(k+1) binary arrays with no 2X2 subblock containing exactly one 1.at n=23A184197
• T(n,k)=Half the number of (n+1)X(k+1) binary arrays with no 2X2 subblock containing exactly one 1.at n=25A184197
• Second differences of A000219.at n=27A191660