Revert transform of factorials n! (n >= 1).

Terms

a(0) =1a(1) =-2a(2) =2a(3) =-4a(4) =-4a(5) =-48a(6) =-336a(7) =-2928a(8) =-28144a(9) =-298528a(10) =-3454432a(11) =-43286528a(12) =-583835648a(13) =-8433987584a(14) =-129941213184