277458045

Appears in sequences

• 1/6 of the number of ways of 3-coloring an (n-1) X n grid.at n=5A078101
• Number of nX6 0..2 arrays with new values 0..2 introduced in row major order and no element equal to any horizontal or vertical neighbor (colorings ignoring permutations of colors).at n=6A207995
• Number of nX7 0..2 arrays with new values 0..2 introduced in row major order and no element equal to any horizontal or vertical neighbor (colorings ignoring permutations of colors).at n=5A207996