E.g.f.: tan(arcsinh(x)*exp(x))=x+2/2!*x^2+4/3!*x^3+24/4!*x^4+180/5!*x^5...

A012587

E.g.f.: tan(arcsinh(x)*exp(x))=x+2/2!*x^2+4/3!*x^3+24/4!*x^4+180/5!*x^5...

Terms

    a(0) =0a(1) =1a(2) =2a(3) =4a(4) =24a(5) =180a(6) =1240a(7) =10456a(8) =112896a(9) =1316816a(10) =16378528a(11) =229634304a(12) =3569726336a(13) =59315089600

External references