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Numbers whose base-6 representation has the same nonzero number of 1's and 5's.
0

%I #10 Jun 20 2021 08:27:14

%S 11,31,41,53,59,65,66,68,69,70,83,103,119,139,155,175,181,186,188,189,

%T 190,193,199,205,221,233,239,245,246,248,249,250,287,293,305,311,317,

%U 318,320,321,322,329,341,347,353,354,356,357,358,365,377,383,389,390

%N Numbers whose base-6 representation has the same nonzero number of 1's and 5's.

%K nonn,base,easy

%O 1,1

%A _Olivier Gérard_