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

Terms

a(0) =0a(1) =0a(2) =-1a(3) =1a(4) =-6a(5) =15a(6) =-150a(7) =705a(8) =-8120a(9) =56315a(10) =-750960a(11) =7042275a(12) =-106939800a(13) =1270108125a(14) =-21672530880a(15) =312137314125