E.g.f. A(x) satisfies the property that the coefficient of x^n in the (2*n)-th iterations of e.g.f. A(x), for n>=1, begins with [1,4] and continues with all zeros thereafter.

A186292

E.g.f. A(x) satisfies the property that the coefficient of x^n in the (2*n)-th iterations of e.g.f. A(x), for n>=1, begins with [1,4] and continues with all zeros thereafter.