Number of nX3 0..2 arrays avoiding the pattern z z+1 z horizontally and z z-1 z vertically.
A207984
Number of nX3 0..2 arrays avoiding the pattern z z+1 z horizontally and z z-1 z vertically.
Terms
- a(0) =25a(1) =625a(2) =12468a(3) =244325a(4) =4827482a(5) =95527856a(6) =1889730415a(7) =37378616643a(8) =739356161720
External references
- oeis: A207984