Triangle read by rows: T(n,k) = n!*2^k/(n-k)! (n >= 0, 0 <= k <= n).

Terms

a(0) =1a(1) =1a(2) =2a(3) =1a(4) =4a(5) =8a(6) =1a(7) =6a(8) =24a(9) =48a(10) =1a(11) =8a(12) =48a(13) =192a(14) =384a(15) =1a(16) =10a(17) =80a(18) =480a(19) =1920a(20) =3840a(21) =1a(22) =12a(23) =120a(24) =960a(25) =5760a(26) =23040a(27) =46080a(28) =1a(29) =14