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Numbers whose base-4 and base-10 expansions have the same digit sum.
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%I #19 Jun 21 2021 02:48:53

%S 1,2,3,12,13,14,15,20,21,22,23,40,41,42,43,50,51,60,61,62,63,104,105,

%T 106,107,112,113,114,115,124,125,126,127,130,131,140,141,142,143,150,

%U 151,170,171,190,191,204,205,206,207,212,213

%N Numbers whose base-4 and base-10 expansions have the same digit sum.

%t Select[Range[300],Total[IntegerDigits[#]]==Total[IntegerDigits[#,4]]&] (* _Harvey P. Dale_, Jan 20 2015 *)

%Y Cf. A007953, A053737.

%K nonn,base

%O 1,2

%A _Clark Kimberling_