cosh(sin(arctanh(x)))=1+1/2!*x^2+5/4!*x^4+61/6!*x^6+937/8!*x^8...
A012060
cosh(sin(arctanh(x)))=1+1/2!*x^2+5/4!*x^4+61/6!*x^6+937/8!*x^8...
Terms
- a(0) =1a(1) =1a(2) =5a(3) =61a(4) =937a(5) =-34919a(6) =-13257619a(7) =-3269873515a(8) =-890367567919
External references
- oeis: A012060