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

Terms

a(0) =0a(1) =0a(2) =2a(3) =-3a(4) =0a(5) =-10a(6) =40a(7) =504a(8) =-2352a(9) =-4824a(10) =59008a(11) =-2753080a(12) =51956960a(13) =-457517424a(14) =3806598640a(15) =-21282319800a(16) =-762122185216