Number of zero-sum nX3 -1..1 arrays with every element equal to at least one horizontal or vertical neighbor.
A201842
Number of zero-sum nX3 -1..1 arrays with every element equal to at least one horizontal or vertical neighbor.
Terms
- a(0) =1a(1) =25a(2) =125a(3) =2019a(4) =17031a(5) =259811a(6) =2809217a(7) =38543397a(8) =461143387a(9) =6074619247a(10) =75861583015a(11) =986136042011
External references
- oeis: A201842