Expansion of e.g.f. arctan(sin(x)*sin(x)), even powers only.
A012297
Expansion of e.g.f. arctan(sin(x)*sin(x)), even powers only.
Terms
- a(0) =2a(1) =-8a(2) =-208a(3) =13312a(4) =161792a(5) =-138042368a(6) =9993992192
External references
- oeis: A012297