317966

Appears in sequences

• Number of n X n binary arrays with some element plus some horizontally or antidiagonally adjacent neighbor totalling two exactly once.at n=4A268880
• Number of nX5 binary arrays with some element plus some horizontally or antidiagonally adjacent neighbor totalling two exactly once.at n=4A268883
• T(n,k)=Number of nXk binary arrays with some element plus some horizontally or antidiagonally adjacent neighbor totalling two exactly once.at n=40A268886
• Number of 5Xn binary arrays with some element plus some horizontally or antidiagonally adjacent neighbor totalling two exactly once.at n=4A268890