Number of 5 X 9 matrices with elements in 0..n with each row and each column in nondecreasing order. 5,9,n can be permuted, see formula.
A140920
Number of 5 X 9 matrices with elements in 0..n with each row and each column in nondecreasing order. 5,9,n can be permuted, see formula.
Terms
- a(0) =1a(1) =2002a(2) =1002001a(3) =208416208a(4) =23029990984
External references
- oeis: A140920