Number of nX3 arrays of occupancy after each element stays put or moves to some horizontal, diagonal or antidiagonal neighbor, without move-in move-out straight through or left turns.
A221926
Number of nX3 arrays of occupancy after each element stays put or moves to some horizontal, diagonal or antidiagonal neighbor, without move-in move-out straight through or left turns.
Terms
- a(0) =6a(1) =232a(2) =5748a(3) =153652a(4) =4053833a(5) =107220027a(6) =2834169558a(7) =74925759485
External references
- oeis: A221926