sech(arcsinh(x)+arctan(x))=1-4/2!*x^2+104/4!*x^4-6790/6!*x^6...
A013114
sech(arcsinh(x)+arctan(x))=1-4/2!*x^2+104/4!*x^4-6790/6!*x^6...
Terms
- a(0) =1a(1) =-4a(2) =104a(3) =-6790a(4) =827480a(5) =-162019450a(6) =46518314300
External references
- oeis: A013114