%I #14 Apr 23 2023 22:02:06
%S 6,13,20,27,34,41,42,43,44,45,46,47,55,62,69,76,83,90,91,92,93,94,95,
%T 96,104,111,118,125,132,139,140,141,142,143,144,145,153,160,167,174,
%U 181,188,189,190,191,192,193,194,202,209,216,223
%N Numbers whose base-7 representation contains exactly one 6.
%t Select[Range[300],DigitCount[#,7,6]==1&] (* _Harvey P. Dale_, Dec 26 2018 *)
%Y Cf. A007093.
%K nonn,base
%O 1,1
%A _Clark Kimberling_