sech(arcsin(x)-arctanh(x))=1-10/6!*x^6-840/8!*x^8-87750/10!*x^10...

A013438

sech(arcsin(x)-arctanh(x))=1-10/6!*x^6-840/8!*x^8-87750/10!*x^10...

Terms

    a(0) =1a(1) =0a(2) =0a(3) =-10a(4) =-840a(5) =-87750a(6) =-12248500a(7) =-2253971850a(8) =-533589966000

External references