Expansion of tanh(tan(x)*sinh(x))/2.

A024268

Expansion of tanh(tan(x)*sinh(x))/2.

Terms

    a(0) =0a(1) =1a(2) =6a(3) =-49a(4) =-8484a(5) =-511379a(6) =6769026a(7) =9445602011

External references