Expansion of e.g.f.: tanh(x)*sin(tan(x)) (even part).
A009834
Expansion of e.g.f.: tanh(x)*sin(tan(x)) (even part).
Terms
- a(0) =0a(1) =2a(2) =-4a(3) =38a(4) =-3144a(5) =-49526a(6) =-10349516a(7) =-460714706a(8) =-91894143376
External references
- oeis: A009834