Number of nX5 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 2,1,1,0,0 for x=0,1,2,3,4.
A197447
Number of nX5 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 2,1,1,0,0 for x=0,1,2,3,4.
Terms
- a(0) =7a(1) =107a(2) =2678a(3) =52117a(4) =1108699a(5) =23829080a(6) =504568165a(7) =10724642167a(8) =228248265080
External references
- oeis: A197447