Number of n X n 0..1 arrays with row sums 7 and column sums 7.
A172541
Number of n X n 0..1 arrays with row sums 7 and column sums 7.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =1a(7) =40320a(8) =14398171200
External references
- oeis: A172541