Number of n X n 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 3,2,1,4,0 for x=0,1,2,3,4.
A197161
Number of n X n 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 3,2,1,4,0 for x=0,1,2,3,4.
Terms
- a(0) =1a(1) =5a(2) =66a(3) =2573a(4) =331406a(5) =135820428a(6) =178698032203
External references
- oeis: A197161