  We report measurements of the nonlinear conductance of InAs nanowire quantum
dots coupled to superconducting leads. We observe a clear alternation between
odd and even occupation of the dot, with sub-gap-peaks at $|V_{sd}|=\Delta/e$
markedly stronger(weaker) than the quasiparticle tunneling peaks at
$|V_{sd}|=2\Delta/e$ for odd(even) occupation. We attribute the enhanced
$\Delta$-peak to an interplay between Kondo-correlations and Andreev tunneling
in dots with an odd number of spins, and substantiate this interpretation by a
poor man's scaling analysis.
