Number of n X n 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 4,0,2,1,3 for x=0,1,2,3,4.
A196712
Number of n X n 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 4,0,2,1,3 for x=0,1,2,3,4.
Terms
- a(0) =1a(1) =6a(2) =40a(3) =1142a(4) =56137a(5) =9202067a(6) =3464871506
External references
- oeis: A196712