Number of n X n 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 1,4,0,2,3 for x=0,1,2,3,4.
A196338
Number of n X n 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 1,4,0,2,3 for x=0,1,2,3,4.
Terms
- a(0) =1a(1) =7a(2) =30a(3) =495a(4) =16949a(5) =1300388a(6) =224664284a(7) =86035336419
External references
- oeis: A196338