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

A024291

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

Terms

    a(0) =0a(1) =1a(2) =10a(3) =219a(4) =8340a(5) =486517a(6) =40126366a(7) =4429823055a(8) =629201874216

External references