Number of n X n 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 3,3,2,1,2 for x=0,1,2,3,4.
A197336
Number of n X n 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 3,3,2,1,2 for x=0,1,2,3,4.
Terms
- a(0) =1a(1) =2a(2) =11a(3) =167a(4) =4005a(5) =238206a(6) =30771790a(7) =8790242932
External references
- oeis: A197336