37963968

Appears in sequences

• Number of n X n 0..3 arrays with some element plus some horizontally or vertically adjacent neighbor totalling three exactly once.at n=3A269090
• Number of nX4 0..3 arrays with some element plus some horizontally or vertically adjacent neighbor totalling three exactly once.at n=3A269093
• T(n,k)=Number of nXk 0..3 arrays with some element plus some horizontally or vertically adjacent neighbor totalling three exactly once.at n=24A269097