sech(arcsin(x)+sin(x))=1-4/2!*x^2+80/4!*x^4-4024/6!*x^6+373376/8!*x^8...
A012923
sech(arcsin(x)+sin(x))=1-4/2!*x^2+80/4!*x^4-4024/6!*x^6+373376/8!*x^8...
Terms
- a(0) =1a(1) =-4a(2) =80a(3) =-4024a(4) =373376a(5) =-55810464a(6) =12218736768
External references
- oeis: A012923