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

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =-7a(6) =-47a(7) =-223a(8) =-895a(9) =-2959a(10) =-31a(11) =82721a(12) =1002497a(13) =8156073a(14) =53580465a(15) =239061825a(16) =-8587007a(17) =-19348243487a(18) =-305732208959