Triangle T(n,r), n>=0, r=n, n-1, ..., 1, 0; where T(n,r) = product of all possible sums of r numbers chosen from [1..n].
A067050
Triangle T(n,r), n>=0, r=n, n-1, ..., 1, 0; where T(n,r) = product of all possible sums of r numbers chosen from [1..n].
Terms
- a(0) =1a(1) =1a(2) =1a(3) =3a(4) =2a(5) =1a(6) =6a(7) =60a(8) =6a(9) =1a(10) =10a(11) =3024a(12) =12600a(13) =24a(14) =1a(15) =15a(16) =240240a(17) =2874009600a(18) =38102400a(19) =120a(20) =1a(21) =21a(22) =27907200a(26) =720a(27) =1a(28) =28a(29) =4475671200
External references
- oeis: A067050