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 straight through or left turns.
A221933
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 straight through or left turns.
Terms
- a(0) =6a(1) =105a(2) =1599a(3) =24535a(4) =376389a(5) =5773962a(6) =88575493a(7) =1358791848a(8) =20844539836a(9) =319765562424
External references
- oeis: A221933