Number of 7 X 9 matrices with elements in 0..n with each row and each column in nondecreasing order. 7,9,n can be permuted, see formula.
A140922
Number of 7 X 9 matrices with elements in 0..n with each row and each column in nondecreasing order. 7,9,n can be permuted, see formula.
Terms
- a(0) =1a(1) =11440a(2) =27810640a(3) =24584605760
External references
- oeis: A140922