Number of nX4 0..4 arrays with some element plus some horizontally, diagonally, antidiagonally or vertically adjacent neighbor totalling four exactly once.
A269825
Number of nX4 0..4 arrays with some element plus some horizontally, diagonally, antidiagonally or vertically adjacent neighbor totalling four exactly once.
Terms
- a(0) =240a(1) =39784a(2) =3200604a(3) =240637408a(4) =16644595392
External references
- oeis: A269825