Number of 7 X 7 matrices with elements in 0..n with each row and each column in nondecreasing order. 7,7,n can be permuted, see formula.
A140911
Number of 7 X 7 matrices with elements in 0..n with each row and each column in nondecreasing order. 7,7,n can be permuted, see formula.
Terms
- a(0) =1a(1) =3432a(2) =2760615a(3) =877262100a(4) =142174944340
External references
- oeis: A140911