Triangle read by rows: T(n,k) = (n + 1)*(n + k)!.

Terms

a(0) =1a(1) =2a(2) =4a(3) =6a(4) =18a(5) =72a(6) =24a(7) =96a(8) =480a(9) =2880a(10) =120a(11) =600a(12) =3600a(13) =25200a(14) =201600a(15) =720a(16) =4320a(17) =30240a(18) =241920a(19) =2177280a(20) =21772800a(21) =5040a(22) =35280a(23) =282240a(24) =2540160a(25) =25401600a(26) =279417600a(27) =3353011200a(28) =40320a(29) =322560