Triangle of numbers T(n,k) = k!*Stirling2(n,k) read by rows (n >= 1, 1 <= k <= n).

Terms

a(0) =1a(1) =1a(2) =2a(3) =1a(4) =6a(5) =6a(6) =1a(7) =14a(8) =36a(9) =24a(10) =1a(11) =30a(12) =150a(13) =240a(14) =120a(15) =1a(16) =62a(17) =540a(18) =1560a(19) =1800a(20) =720a(21) =1a(22) =126a(23) =1806a(24) =8400a(25) =16800a(26) =15120a(27) =5040a(28) =1a(29) =254