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

Terms

a(0) =0a(1) =0a(2) =-1a(3) =1a(4) =-6a(5) =15a(6) =-90a(7) =285a(8) =-1960a(9) =2275a(10) =-12600a(11) =-877725a(12) =9088200a(13) =-206895975a(14) =2291088800a(15) =-43975670375a(16) =519884196000