Number of nX4 0..2 arrays avoiding the pattern z-1 z-1 z in any row or column.
A207197
Number of nX4 0..2 arrays avoiding the pattern z-1 z-1 z in any row or column.
Terms
- a(0) =69a(1) =4761a(2) =247002a(3) =12539372a(4) =632716336a(5) =31901664357
External references
- oeis: A207197