Expansion of e.g.f. cos(tan(x)*cosh(x)), even terms only.
A009075
Expansion of e.g.f. cos(tan(x)*cosh(x)), even terms only.
Terms
- a(0) =1a(1) =-1a(2) =-19a(3) =-397a(4) =-7943a(5) =64551a(6) =43466469a(7) =7570028763
External references
- oeis: A009075