arcsin(tan(x)*tan(x))=2/2!*x^2+16/4!*x^4+392/6!*x^6+21376/8!*x^8...
A012388
arcsin(tan(x)*tan(x))=2/2!*x^2+16/4!*x^4+392/6!*x^6+21376/8!*x^8...
Terms
- a(0) =0a(1) =2a(2) =16a(3) =392a(4) =21376a(5) =2117792a(6) =333550336a(7) =76433892992
External references
- oeis: A012388