26891280

Appears in sequences

• Number of nX2 0..4 arrays with some element plus some horizontally or vertically adjacent neighbor totalling four exactly once.at n=5A270052
• Number of nX6 0..4 arrays with some element plus some horizontally or vertically adjacent neighbor totalling four exactly once.at n=1A270056
• T(n,k)=Number of nXk 0..4 arrays with some element plus some horizontally or vertically adjacent neighbor totalling four exactly once.at n=22A270058
• T(n,k)=Number of nXk 0..4 arrays with some element plus some horizontally or vertically adjacent neighbor totalling four exactly once.at n=26A270058