Triangle read by rows: T(n,k) = Sum_{i=k..n} i!*Stirling2(n,i), n >= 1, 1 <= k <= n.

Terms

a(0) =1a(1) =3a(2) =2a(3) =13a(4) =12a(5) =6a(6) =75a(7) =74a(8) =60a(9) =24a(10) =541a(11) =540a(12) =510a(13) =360a(14) =120a(15) =4683a(16) =4682a(17) =4620a(18) =4080a(19) =2520a(20) =720a(21) =47293a(22) =47292a(23) =47166a(24) =45360a(25) =36960a(26) =20160a(27) =5040a(28) =545835a(29) =545834