Number of nXnXn triangular 0..2 arrays with some element plus some adjacent element totalling 2+1 exactly once.
A270504
Number of nXnXn triangular 0..2 arrays with some element plus some adjacent element totalling 2+1 exactly once.
Terms
- a(0) =0a(1) =6a(2) =144a(3) =5406a(4) =369072a(5) =47829828a(6) =12072484260
External references
- oeis: A270504