  We study a continued fraction due to Ramanujan, that he recorded as Entry 12
in Chapter 16 of his second notebook. It is presented in Part III of Berndt's
volumes on Ramanujan's notebooks.
  We give two alternate approaches to proving Ramanujan's Entry 12, one using a
method of Euler, and another using the theory of orthogonal polynomials. We
consider a natural generalization of Entry 12 suggested by the theory of
orthogonal polynomials.
