Expansion of e.g.f. exp(tan(exp(x)-1)).

Terms

a(0) =1a(1) =1a(2) =2a(3) =7a(4) =35a(5) =218a(6) =1619a(7) =13973a(8) =137216a(9) =1508981a(10) =18360015a(11) =244770120a(12) =3547043469a(13) =55499654941a(14) =932309976082