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%I #15 May 19 2023 20:17:05
%S 7,11,27,35,38,39,42,47,51,55,58,59,66,71,82,86,107,111,127,135,138,
%T 139,142,147,175,178,179,190,193,194,195,198,199,202,210,213,214,217,
%U 222,227,235,238,239,242,247,251,255,258,259,266
%N Numbers whose base-5 representation contains exactly one 1 and one 2.
%Y Cf. A007091.
%K nonn,base
%O 1,1
%A _Clark Kimberling_
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