Number of 3Xn 0..3 arrays with some element plus some horizontally, diagonally or antidiagonally adjacent neighbor totalling three exactly once.
A269216
Number of 3Xn 0..3 arrays with some element plus some horizontally, diagonally or antidiagonally adjacent neighbor totalling three exactly once.
Terms
- a(0) =0a(1) =1152a(2) =18048a(3) =308544a(4) =4744704a(5) =70371048a(6) =1012764384a(7) =14272781904a(8) =197924795136
External references
- oeis: A269216