Number of n X n 0..1 arrays with corresponding row and column sums equal.
A229865
Number of n X n 0..1 arrays with corresponding row and column sums equal.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =80a(4) =2432a(5) =247552a(6) =88060928a(7) =112371410944
External references
- oeis: A229865