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

A024279

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

Terms

    a(0) =0a(1) =1a(2) =6a(3) =191a(4) =11676a(5) =1111501a(6) =159118146a(7) =31534949291

External references