E.g.f. (in x^2) is arctan(sinh(x)+sin(x)).

A013029

E.g.f. (in x^2) is arctan(sinh(x)+sin(x)).

Terms

    a(0) =2a(1) =-16a(2) =770a(3) =-92496a(4) =20740610a(5) =-7474383376

External references