Number of nX6 0..3 arrays with every nonzero element less than or equal to some horizontal or vertical neighbor.
A203099
Number of nX6 0..3 arrays with every nonzero element less than or equal to some horizontal or vertical neighbor.
Terms
- a(0) =422a(1) =1705124a(2) =3790420430
External references
- oeis: A203099