Expansion of 1/Product_{k>=1} (1 + k!*x^k).

Terms

a(0) =1a(1) =-1a(2) =-1a(3) =-5a(4) =-15a(5) =-93a(6) =-551a(7) =-4129a(8) =-33607a(9) =-312929a(10) =-3179343a(11) =-35602881a(12) =-432201743a(13) =-5678740945a(14) =-80142780751