Number of 4 X 6 matrices with elements in 0..n with each row and each column in nondecreasing order. 4,6,n can be permuted, see formula.
A140904
Number of 4 X 6 matrices with elements in 0..n with each row and each column in nondecreasing order. 4,6,n can be permuted, see formula.
Terms
- a(0) =1a(1) =210a(2) =13860a(3) =457380a(4) =9343620a(5) =133613766a(6) =1447482465a(7) =12544848030a(8) =90474964580a(9) =559299781040
External references
- oeis: A140904