Expansion of tan(tan(x).exp(x)).

Terms

a(0) =0a(1) =1a(2) =2a(3) =7a(4) =36a(5) =277a(6) =2422a(7) =24939a(8) =292488a(9) =3893577a(10) =57581162a(11) =937884143a(12) =16663799724a(13) =320906530973