25448809

Appears in sequences

• Half the number of nX5 binary arrays with each element equal to at least one neighbor.at n=5A180765
• Half the number of nX6 binary arrays with each element equal to at least one neighbor.at n=4A180766
• T(n,k) = half the number of n X k binary arrays with each element equal to at least one neighbor.at n=49A180771
• T(n,k) = half the number of n X k binary arrays with each element equal to at least one neighbor.at n=50A180771