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

Terms

a(0) =1a(1) =1a(2) =2a(3) =6a(4) =25a(5) =128a(6) =754a(7) =5001a(8) =37048a(9) =303930a(10) =2732395a(11) =26657106a(12) =280039786a(13) =3149224991a(14) =37729906686a(15) =479570263690