Number of nX5 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,0,1,1,1 for x=0,1,2,3,4.
A197428
Number of nX5 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,0,1,1,1 for x=0,1,2,3,4.
Terms
- a(0) =9a(1) =227a(2) =2152a(3) =43909a(4) =720447a(5) =11769456a(6) =195632425a(7) =3187783369a(8) =53026008675a(9) =881220874951
External references
- oeis: A197428