Number of nX4 0..3 arrays avoiding the pattern z z+1 z horizontally and z z-1 z vertically.
A209088
Number of nX4 0..3 arrays avoiding the pattern z z+1 z horizontally and z z-1 z vertically.
Terms
- a(0) =232a(1) =53824a(2) =10347649a(3) =1971161340a(4) =376488811859
External references
- oeis: A209088