  We consider the Mahler measure of the polynomial 1+x_1+x_2+x_3+x_4, which is
the first case not yet evaluated explicitly. A conjecture due to F.
Rodriguez-Villegas represents this Mahler measure as a special value at the
point 4 of the L-function of a modular modular form of weight 3. We prove that
this Mahler measure is equal to a linear combination of double L-values of
certain meromorphic modular forms of weight 4.
