Expansion of e.g.f.: exp(tan(sinh(x))).

Terms

a(0) =1a(1) =1a(2) =1a(3) =4a(4) =13a(5) =68a(6) =373a(7) =2528a(8) =19097a(9) =160400a(10) =1522409a(11) =15384128a(12) =174263717a(13) =2066458176a(14) =27072485469a(15) =369136141824