Expansion of e.g.f.: tan(log(1+sinh(x))).

Terms

a(0) =0a(1) =1a(2) =-1a(3) =5a(4) =-22a(5) =151a(6) =-1186a(7) =11255a(8) =-121752a(9) =1493101a(10) =-20381896a(11) =306816905a(12) =-5045231632a(13) =89977880851