Triangle of falling factorials, read by rows: T(n, k) = n*(n-1)*...*(n-k+1), n > 0, 1 <= k <= n.

Terms

a(0) =1a(1) =2a(2) =2a(3) =3a(4) =6a(5) =6a(6) =4a(7) =12a(8) =24a(9) =24a(10) =5a(11) =20a(12) =60a(13) =120a(14) =120a(15) =6a(16) =30a(17) =120a(18) =360a(19) =720a(20) =720a(21) =7a(22) =42a(23) =210a(24) =840a(25) =2520a(26) =5040a(27) =5040a(28) =8a(29) =56