Row sums of A387138.

Terms

a(0) =1a(1) =2a(2) =8a(3) =48a(4) =192a(5) =1920a(6) =23040a(7) =322560a(8) =1290240a(9) =7741440a(10) =154828800a(11) =3406233600a(12) =40874803200