Number of n X n 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 4,2,0,1,3 for x=0,1,2,3,4.
A197041
Number of n X n 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 4,2,0,1,3 for x=0,1,2,3,4.
Terms
- a(0) =1a(1) =7a(2) =120a(3) =7407a(4) =1563352a(5) =1146653592
External references
- oeis: A197041