Number of nX4 0..3 arrays with some element plus some horizontally or vertically adjacent neighbor totalling three exactly once.
A269093
Number of nX4 0..3 arrays with some element plus some horizontally or vertically adjacent neighbor totalling three exactly once.
Terms
- a(0) =108a(1) =11424a(2) =715320a(3) =37963968a(4) =1856325000a(5) =86415197088
External references
- oeis: A269093