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%I #11 Apr 25 2021 12:09:56
%S 538084,538085,538086,538087,538088,538089,538090,538091,538101,
%T 538102,538104,538105,538106,538107,538108,538109,538110,538111,
%U 538112,538114,538115,538116,538117,538118,538119,538120,538121
%N Numbers whose base-9 representation has exactly 7 runs.
%t Select[Range[550000],Length[Split[IntegerDigits[#,9]]]==7&] (* _Harvey P. Dale_, Mar 11 2015 *)
%Y Cf. A007095.
%K nonn,base
%O 1,1
%A _Clark Kimberling_