Resistor network with resistance of $\pi$

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Given an infinite amount of identical resistors with resistance $R$, how to construct a resistor network with resistance $\pi R$? And how to minimize the amount of resistors used for a given error limit? Since total resistance is either the sum or sum of inverses of its components, I guess continued fraction is one way to approximate $\pi$, but would there be a more "intereresting" approach?