Expansion of sin(tan(tanh(x))).

A009503

Expansion of sin(tan(tanh(x))).

Terms

    a(0) =1a(1) =-1a(2) =-7a(3) =279a(4) =-5167a(5) =-150833a(6) =27945609a(7) =-1993449433a(8) =-9028140255

External references