Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 2,0,1,0,1 for x=0,1,2,3,4.
A197678
Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 2,0,1,0,1 for x=0,1,2,3,4.
Terms
- a(0) =25a(1) =361a(2) =8930a(3) =153715a(4) =2871646a(5) =51167876a(6) =924904506a(7) =16683567785a(8) =302284521370
External references
- oeis: A197678