Expansion of e.g.f. arctanh(cos(x)*log(x+1)).

Terms

a(0) =0a(1) =1a(2) =-1a(3) =1a(4) =-12a(5) =43a(6) =-315a(7) =2987a(8) =-24976a(9) =288541a(10) =-3544965a(11) =46607053a(12) =-707823996a(13) =11389328039a(14) =-199011366463