Number of 3*n X 6 0..1 arrays with row sums 2 and column sums n.
A172572
Number of 3*n X 6 0..1 arrays with row sums 2 and column sums n.
Terms
- a(0) =90a(1) =67950a(2) =90291600a(3) =154700988750
External references
- oeis: A172572
A172572
Number of 3*n X 6 0..1 arrays with row sums 2 and column sums n.