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

Terms

a(0) =1a(1) =1a(2) =0a(3) =2a(4) =-4a(5) =26a(6) =-134a(7) =930a(8) =-6728a(9) =53056a(10) =-413744a(11) =2752936a(12) =-3042040a(13) =-488089848a(14) =16658828096a(15) =-442856699584