Number of nX5 arrays of occupancy after each element moves to some horizontal or vertical neighbor, without 2-loops or left turns.

A221766

Number of nX5 arrays of occupancy after each element moves to some horizontal or vertical neighbor, without 2-loops or left turns.

Terms

    a(0) =0a(1) =21a(2) =536a(3) =12177a(4) =296912a(5) =7115200a(6) =170234678a(7) =4073986651a(8) =97465620298

External references