Number of n X n 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 2,4,1,0,1 for x=0,1,2,3,4.
A197367
Number of n X n 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 2,4,1,0,1 for x=0,1,2,3,4.
Terms
- a(0) =1a(1) =1a(2) =32a(3) =161a(4) =7485a(5) =509018a(6) =79831388a(7) =27751402365
External references
- oeis: A197367