Number of n X 3 arrays of occupancy after each element stays put or moves to some horizontal or antidiagonal neighbor, without move-in move-out left turns.
A221732
Number of n X 3 arrays of occupancy after each element stays put or moves to some horizontal or antidiagonal neighbor, without move-in move-out left turns.
Terms
- a(0) =8a(1) =152a(2) =2904a(3) =54888a(4) =1038128a(5) =19634240a(6) =371344456a(7) =7023277960a(8) =132832016296
External references
- oeis: A221732