Conversion from special function to continued fraction

The error function is defined as

That is expanded into the following series

The second kind can be converted into continued fraction by the formula

  (regular expression)

   in special form

in special form

The Riemann Zeta function is defined as

    for x>1

We use the following formula

   (regular expression)

   in special form as in 0216.

That is

  in special form