Expansion of e.g.f. sec(sin(x)*sin(x)), even powers only.
A012302
Expansion of e.g.f. sec(sin(x)*sin(x)), even powers only.
Terms
- a(0) =1a(1) =0a(2) =12a(3) =-240a(4) =12432a(5) =-1073280a(6) =125898432a(7) =-20938794240
External references
- oeis: A012302