%I #9 Apr 25 2021 01:26:59
%S 17157,17159,17160,17161,17162,17163,17164,17165,17167,17168,17169,
%T 17170,17171,17172,17173,17175,17176,17177,17178,17179,17180,17181,
%U 17183,17184,17185,17186,17187,17188,17189,17191
%N Numbers whose base-7 representation has exactly 6 runs.
%Y Cf. A007093.
%K nonn,base
%O 1,1
%A _Clark Kimberling_