Number of 6 X 6 X 6 triangular 0..n arrays with some element plus some adjacent element totalling n+1, n or n-1 exactly once.
A270855
Number of 6 X 6 X 6 triangular 0..n arrays with some element plus some adjacent element totalling n+1, n or n-1 exactly once.
Terms
- a(0) =0a(1) =0a(2) =28440a(3) =27582438a(4) =5805948474a(5) =571228600932
External references
- oeis: A270855