Number of n X n 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 3,3,1,1,0 for x=0,1,2,3,4.
A197343
Number of n X n 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 3,3,1,1,0 for x=0,1,2,3,4.
Terms
- a(0) =1a(1) =1a(2) =18a(3) =441a(4) =17577a(5) =2036994a(6) =617973077a(7) =434261782615
External references
- oeis: A197343