Expansion of e.g.f. exp(x - x^5/120).

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =0a(6) =-5a(7) =-20a(8) =-55a(9) =-125a(10) =-125a(11) =925a(12) =7525a(13) =34750a(14) =124125a(15) =249250a(16) =-1013375a(17) =-14708875a(18) =-97413875a(19) =-477236375a(20) =-1443329375a(21) =3466472500a(22) =91499089375a(23) =804081585000