For a catastrophically unstable recurrence in one direction, any seed values for consecutive 
and 
will converge to the desired sequence of functions in the opposite direction times
an unknown normalization factor.
Miller's Algorithm
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Cite this as:
Weisstein, Eric W. "Miller's Algorithm." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/MillersAlgorithm.html