a(n) = n!*A063019(n).

Terms

a(0) =0a(1) =1a(2) =2a(3) =6a(4) =24a(5) =240a(6) =5040a(7) =110880a(8) =2298240a(9) =47900160a(10) =1117670400a(11) =31654022400