Expansion of e.g.f. cos(x*tan(x)), even terms only.
A009080
Expansion of e.g.f. cos(x*tan(x)), even terms only.
Terms
- a(0) =1a(1) =0a(2) =-12a(3) =-240a(4) =-5936a(5) =-155520a(6) =-65472a(7) =981903104a(8) =223580862720
External references
- oeis: A009080