Column 1 of triangle A136590.

Terms

a(0) =1a(1) =1a(2) =-4a(3) =6a(4) =24a(5) =-240a(6) =720a(7) =5040a(8) =-80640a(9) =362880a(10) =3628800a(11) =-79833600a(12) =479001600a(13) =6227020800a(14) =-174356582400