Number of nX4 0..3 arrays with some element plus some horizontally, antidiagonally or vertically adjacent neighbor totalling three exactly once.
A269148
Number of nX4 0..3 arrays with some element plus some horizontally, antidiagonally or vertically adjacent neighbor totalling three exactly once.
Terms
- a(0) =108a(1) =6224a(2) =220968a(3) =7002040a(4) =208984848a(5) =6004186984a(6) =167970539096
External references
- oeis: A269148