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%I #12 Aug 10 2021 18:47:25
%S 750,751,752,753,754,755,758,760,761,762,763,764,767,768,770,771,772,
%T 773,776,777,778,780,781,782,785,786,787,788,790,791,794,795,796,797,
%U 798,800,803,804,805,806,807,808,894,895,896
%N Numbers with exactly four distinct base-9 digits.
%Y Cf. A007095.
%K nonn,base
%O 1,1
%A _Clark Kimberling_
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