Number of nX3 arrays containing 3 copies of 0..n-1 with column sums equal.
A268471
Number of nX3 arrays containing 3 copies of 0..n-1 with column sums equal.
Terms
- a(0) =1a(1) =8a(2) =216a(3) =19584a(4) =4140000a(5) =1936704000
External references
- oeis: A268471