Half the number of n X 3 0..3 arrays with each element equal to either the maximum or the minimum of its horizontal and vertical neighbors.
A183578
Half the number of n X 3 0..3 arrays with each element equal to either the maximum or the minimum of its horizontal and vertical neighbors.
Terms
- a(0) =2a(1) =78a(2) =814a(3) =9667a(4) =110674a(5) =1282814a(6) =14823037a(7) =171459557a(8) =1982720806a(9) =22929915669a(10) =265174801858
External references
- oeis: A183578