Number of nX2 0..5 arrays with every nonzero element less than or equal to some NW, E or S neighbor.
A203271
Number of nX2 0..5 arrays with every nonzero element less than or equal to some NW, E or S neighbor.
Terms
- a(0) =1a(1) =36a(2) =861a(3) =12783a(4) =165993a(5) =2229009a(6) =31121459a(7) =435195718a(8) =6036949807a(9) =83544266699
External references
- oeis: A203271