sin(arctan(x)*sin(x))=2/2!*x^2-12/4!*x^4+70/6!*x^6+2856/8!*x^8...
A012421
sin(arctan(x)*sin(x))=2/2!*x^2-12/4!*x^4+70/6!*x^6+2856/8!*x^8...
Terms
- a(0) =2a(1) =-12a(2) =70a(3) =2856a(4) =-406262a(5) =53106460a(6) =-8809933106
External references
- oeis: A012421