tanh(arcsin(sinh(x)))=x-4/5!*x^5+80/7!*x^7+5456/9!*x^9+511360/11!*x^11...
A012106
tanh(arcsin(sinh(x)))=x-4/5!*x^5+80/7!*x^7+5456/9!*x^9+511360/11!*x^11...
Terms
- a(0) =1a(1) =0a(2) =-4a(3) =80a(4) =5456a(5) =511360a(6) =83316416a(7) =18755459840
External references
- oeis: A012106