Number of n X n 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 1,4,2,0,3 for x=0,1,2,3,4.
A196637
Number of n X n 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 1,4,2,0,3 for x=0,1,2,3,4.
Terms
- a(0) =1a(1) =2a(2) =21a(3) =327a(4) =17518a(5) =2166536a(6) =665532327a(7) =513774394191
External references
- oeis: A196637