Number of nX3 0..7 arrays with some element plus some horizontally, diagonally, antidiagonally or vertically adjacent neighbor totalling seven exactly once.
A270146
Number of nX3 0..7 arrays with some element plus some horizontally, diagonally, antidiagonally or vertically adjacent neighbor totalling seven exactly once.
Terms
- a(0) =112a(1) =85056a(2) =24250368a(3) =5750902944
External references
- oeis: A270146