402494400

Appears in sequences

• Number of n X 3 arrays of occupancy after each element moves to some horizontal or vertical neighbor.at n=6A217268
• Number of nX7 arrays of occupancy after each element moves to some horizontal or vertical neighbor.at n=2A217272
• T(n,k)=Number of nXk arrays of occupancy after each element moves to some horizontal or vertical neighbor.at n=38A217273