Number of n X 4 0..2 arrays avoiding the pattern z+1 z+1 z horizontally and z-1 z-1 z vertically.
A207354
Number of n X 4 0..2 arrays avoiding the pattern z+1 z+1 z horizontally and z-1 z-1 z vertically.
Terms
- a(0) =69a(1) =4761a(2) =244134a(3) =12218660a(4) =607211313a(5) =30147535858
External references
- oeis: A207354