Expansion of e.g.f.: sech(log(x+1)-arcsinh(x))=1-3/4!*x^4+30/5!*x^5-180/6!*x^6+945/7!*x^7...

A013281

Expansion of e.g.f.: sech(log(x+1)-arcsinh(x))=1-3/4!*x^4+30/5!*x^5-180/6!*x^6+945/7!*x^7...

Terms

    a(0) =1a(1) =0a(2) =0a(3) =0a(4) =-3a(5) =30a(6) =-180a(7) =945a(8) =-6615a(9) =56700a(10) =-368550a(11) =1091475a(12) =3274425a(13) =-85135050a(14) =3235131900a(15) =-86199238125

External references