Number of n X 4 arrays of permutations of 4 copies of 0..n-1 with row sums equal and column sums equal.
A265088
Number of n X 4 arrays of permutations of 4 copies of 0..n-1 with row sums equal and column sums equal.
Terms
- a(0) =1a(1) =6a(2) =90a(3) =4464a(4) =493920a(5) =128269440a(6) =57943903500
External references
- oeis: A265088