Number of n X n 0..3 zero-diagonal arrays with corresponding row and column sums equal.
A229416
Number of n X n 0..3 zero-diagonal arrays with corresponding row and column sums equal.
Terms
- a(0) =1a(1) =4a(2) =136a(3) =59008a(4) =345706336
External references
- oeis: A229416