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Numbers whose base-7 representation Sum_{i=0..m} d(i)*7^i has odd d(i) for all odd i.
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%I #9 Feb 15 2021 22:31:43

%S 1,2,3,4,5,6,8,10,12,15,17,19,22,24,26,29,31,33,36,38,40,43,45,47,56,

%T 57,58,59,60,61,62,70,71,72,73,74,75,76,84,85,86,87,88,89,90,105,106,

%U 107,108,109,110,111,119,120,121,122,123,124,125

%N Numbers whose base-7 representation Sum_{i=0..m} d(i)*7^i has odd d(i) for all odd i.

%K nonn,base

%O 1,2

%A _Clark Kimberling_