Expansion of e.g.f: sech(arcsinh(x)+tan(x)).

A013102

Expansion of e.g.f: sech(arcsinh(x)+tan(x)).

Terms

    a(0) =1a(1) =-4a(2) =72a(3) =-3414a(4) =304696a(5) =-43757114a(6) =9229955724

External references