A051400 Smallest value of x such that M(x)=n, where M() is Mertens's function A002321.

1, 95, 218, 219, 221, 554, 586, 1357, 1389, 1393, 1403, 1405, 1418, 3227, 3233, 3235, 3239, 3241, 3242, 3277, 3281, 3293, 3295, 8201, 8413, 8418, 8489, 8490, 8491, 8503, 8506, 8507, 8509, 8510, 8511, 11759, 11761, 11762, 11769, 11770, 11771, 11773