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A023710 Numbers with a single 1 in their base 4 expansion. 1

%I

%S 1,4,6,7,9,13,16,18,19,24,26,27,28,30,31,33,36,38,39,41,45,49,52,54,

%T 55,57,61,64,66,67,72,74,75,76,78,79,96,98,99,104,106,107,108,110,111,

%U 112,114,115,120,122,123,124,126,127,129,132

%N Numbers with a single 1 in their base 4 expansion.

%t Select[ Range[ 160 ], (Count[ IntegerDigits[ #, 4 ], 1 ]==1)& ]

%K nonn,base,easy

%O 1,2

%A _Olivier GĂ©rard_

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Last modified February 25 08:42 EST 2020. Contains 332221 sequences. (Running on oeis4.)