E.g.f. A(x) satisfies A(x) = 1 + (1 - exp(-x)) * A(2 * (1 - exp(-x))).

A355123

E.g.f. A(x) satisfies A(x) = 1 + (1 - exp(-x)) * A(2 * (1 - exp(-x))).

Terms

    a(0) =1a(1) =1a(2) =3a(3) =25a(4) =611a(5) =41721a(6) =7326115a(7) =3120454233

External references