Number of nX7 0..2 arrays avoiding the pattern z z+1 z horizontally and z z-1 z vertically.
A207988
Number of nX7 0..2 arrays avoiding the pattern z z+1 z horizontally and z z-1 z vertically.
Terms
- a(0) =1465a(1) =2146225a(2) =1889730415
External references
- oeis: A207988