Number of n X 4 0..2 arrays x(i,j) with each element horizontally, vertically, diagonally or antidiagonally next to at least one element with value 2-x(i,j).
A230172
Number of n X 4 0..2 arrays x(i,j) with each element horizontally, vertically, diagonally or antidiagonally next to at least one element with value 2-x(i,j).
Terms
- a(0) =9a(1) =1407a(2) =78849a(3) =4722977a(4) =284444079a(5) =17072965263
External references
- oeis: A230172