Number of 3*n X n 0..1 arrays with row sums 5 and column sums 15.
A172561
Number of 3*n X n 0..1 arrays with row sums 5 and column sums 15.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =0a(4) =1a(5) =137225088000
External references
- oeis: A172561
A172561
Number of 3*n X n 0..1 arrays with row sums 5 and column sums 15.