sech(arctan(x)+sin(x))=1-4/2!*x^2+104/4!*x^4-6694/6!*x^6...
A012984
sech(arctan(x)+sin(x))=1-4/2!*x^2+104/4!*x^4-6694/6!*x^6...
Terms
- a(0) =1a(1) =-4a(2) =104a(3) =-6694a(4) =804632a(5) =-155439834a(6) =44039778108
External references
- oeis: A012984
A012984
sech(arctan(x)+sin(x))=1-4/2!*x^2+104/4!*x^4-6694/6!*x^6...