Expansion of e.g.f. tan(log(x+1) - tan(x)).

Terms

a(0) =0a(1) =0a(2) =-1a(3) =0a(4) =-6a(5) =8a(6) =-150a(7) =448a(8) =-7560a(9) =38432a(10) =-642600a(11) =4827328a(12) =-83392848a(13) =846371264a(14) =-15413462064a(15) =198308799232