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

A024233

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

Terms

    a(0) =0a(1) =1a(2) =-2a(3) =-21a(4) =668a(5) =-8363a(6) =-597350a(7) =76652415a(8) =-5349200200a(9) =94006240681

External references