

A221406


Number of nX5 arrays of occupancy after each element stays put or moves to some horizontal or vertical neighbor, with every occupancy equal to zero or two


1



0, 120, 0, 47156, 0, 18852560, 0, 7505597654, 0, 2984164922226, 0, 1185951960926210, 0, 471249297474390114, 0, 187247029623260170674, 0, 74400007192624944055794, 0, 29561675588644660921885852, 0
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