Number of 3 X 5 matrices with elements in 0..n with each row and each column in nondecreasing order. 3,5,n can be permuted, see formula.
A140901
Number of 3 X 5 matrices with elements in 0..n with each row and each column in nondecreasing order. 3,5,n can be permuted, see formula.
Terms
- a(0) =1a(1) =56a(2) =1176a(3) =14112a(4) =116424a(5) =731808a(6) =3737448a(7) =16195608a(8) =61408347a(9) =208416208a(10) =644195552a(11) =1837984512a(12) =4892876352a(13) =12259074816a(14) =29115302688a(15) =65937597264a(16) =143107211709a(17) =298915373064a(18) =603074875480
External references
- oeis: A140901