Expansion of e.g.f.: arcsinh(sech(x)*log(x+1))=x-1/2!*x^2-2/3!*x^3+6/4!*x^4+33/5!*x^5...

A012874

Expansion of e.g.f.: arcsinh(sech(x)*log(x+1))=x-1/2!*x^2-2/3!*x^3+6/4!*x^4+33/5!*x^5...

Terms

    a(0) =0a(1) =1a(2) =-1a(3) =-2a(4) =6a(5) =33a(6) =-285a(7) =-30a(8) =13580a(9) =-35987a(10) =-1418445a(11) =14453470a(12) =125352282a(13) =-3470151531a(14) =-8211284081

External references