Number of n X n 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 4,3,1,0,2 for x=0,1,2,3,4.
A196898
Number of n X n 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 4,3,1,0,2 for x=0,1,2,3,4.
Terms
- a(0) =1a(1) =1a(2) =20a(3) =401a(4) =37194a(5) =9855864a(6) =8351540397
External references
- oeis: A196898