Half the number of nX2 0..3 arrays with each element equal to either the maximum or the minimum of its horizontal and vertical neighbors.
A183577
Half the number of nX2 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) =14a(2) =78a(3) =407a(4) =2216a(5) =12024a(6) =65277a(7) =354615a(8) =1926386a(9) =10465655a(10) =56858572a(11) =308906899a(12) =1678265791a(13) =9117888439a(14) =49536803509a(15) =269129777690
External references
- oeis: A183577