Number of nX7 0..4 arrays with some element plus some horizontally, diagonally, antidiagonally or vertically adjacent neighbor totalling four exactly once.
A269828
Number of nX7 0..4 arrays with some element plus some horizontally, diagonally, antidiagonally or vertically adjacent neighbor totalling four exactly once.
Terms
- a(0) =30720a(1) =55265336a(2) =65284613232
External references
- oeis: A269828