E.g.f. arctanh(log(x+1)/exp(x)).

Terms

a(0) =1a(1) =-3a(2) =10a(3) =-60a(4) =543a(5) =-5905a(6) =75430a(7) =-1130304a(8) =19427485a(9) =-375334543a(10) =8051851146a(11) =-190026879548