Number of nX3 arrays of occupancy after each element moves to some king-move neighbor, with every occupancy equal to zero or two.
A221271
Number of nX3 arrays of occupancy after each element moves to some king-move neighbor, with every occupancy equal to zero or two.
Terms
- a(0) =0a(1) =16a(2) =0a(3) =596a(4) =0a(5) =24366a(6) =0a(7) =1001855a(8) =0a(9) =41171316a(10) =0a(11) =1691327788a(12) =0a(13) =69470653170a(14) =0a(16) =0a(18) =0a(20) =0a(22) =0a(24) =0
External references
- oeis: A221271