Expansion of e.g.f. arcsin(tanh(x) * log(x+1)).

Terms

a(0) =0a(1) =0a(2) =2a(3) =-3a(4) =0a(5) =-10a(6) =280a(7) =-2016a(8) =7728a(9) =-50184a(10) =1167808a(11) =-18442600a(12) =185678240a(13) =-1830386064a(14) =35948019952a(15) =-830271781080