Expansion of tan(log(1+x))/exp(x).

Terms

a(0) =0a(1) =1a(2) =-3a(3) =10a(4) =-44a(5) =255a(6) =-1841a(7) =15818a(8) =-156960a(9) =1762709a(10) =-22076535a(11) =304867506a(12) =-4600188108a(13) =75280188035