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Numbers with exactly three distinct base-9 digits.
1

%I #13 Aug 10 2021 18:47:00

%S 83,84,85,86,87,88,89,99,102,103,104,105,106,107,108,110,112,113,114,

%T 115,116,117,119,120,122,123,124,125,126,128,129,130,132,133,134,135,

%U 137,138,139,140,142,143,144,146,147,148,149

%N Numbers with exactly three distinct base-9 digits.

%Y Cf. A007095.

%K nonn,base

%O 1,1

%A _Clark Kimberling_