n-th derivative of x^(1/x) at x=1.

Terms

a(0) =1a(1) =1a(2) =-2a(3) =3a(4) =4a(5) =-90a(6) =786a(7) =-5670a(8) =34784a(9) =-136584a(10) =-824760a(11) =33137280a(12) =-633666648a(13) =10089623544a(14) =-145675230960