Number of n X n 0..2 arrays x(i,j) with each element horizontally or antidiagonally next to at least one element with value 2-x(i,j).
A230178
Number of n X n 0..2 arrays x(i,j) with each element horizontally or antidiagonally next to at least one element with value 2-x(i,j).
Terms
- a(0) =0a(1) =9a(2) =231a(3) =73857a(4) =133265847
External references
- oeis: A230178