Number of 5 X 5 X 5 triangular 0..n arrays with some element plus some adjacent element totaling n+1, n or n-1 exactly once.
A270854
Number of 5 X 5 X 5 triangular 0..n arrays with some element plus some adjacent element totaling n+1, n or n-1 exactly once.
Terms
- a(0) =0a(1) =0a(2) =2298a(3) =307494a(4) =15754872a(5) =469037376a(6) =8746813158a(7) =121991495904
External references
- oeis: A270854