Number of n X n 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 3,1,2,4,0 for x=0,1,2,3,4.
A197073
Number of n X n 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 3,1,2,4,0 for x=0,1,2,3,4.
Terms
- a(0) =1a(1) =6a(2) =51a(3) =1407a(4) =109286a(5) =25822213a(6) =17446576240
External references
- oeis: A197073