Number of n X n 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 1,3,2,0,4 for x=0,1,2,3,4.
A196629
Number of n X n 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 1,3,2,0,4 for x=0,1,2,3,4.
Terms
- a(0) =1a(1) =2a(2) =21a(3) =327a(4) =17278a(5) =2140040a(6) =651323279a(7) =497248017421
External references
- oeis: A196629