Number of 6 X 6 matrices with elements in 0..n with each row and each column in nondecreasing order. 6,6,n can be permuted, see formula.
A140906
Number of 6 X 6 matrices with elements in 0..n with each row and each column in nondecreasing order. 6,6,n can be permuted, see formula.
Terms
- a(0) =1a(1) =924a(2) =226512a(3) =24293412a(4) =1447482465a(5) =55197331332
External references
- oeis: A140906