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A023709 Numbers with no 1's in base 4 expansion. 3

%I

%S 0,2,3,8,10,11,12,14,15,32,34,35,40,42,43,44,46,47,48,50,51,56,58,59,

%T 60,62,63,128,130,131,136,138,139,140,142,143,160,162,163,168,170,171,

%U 172,174,175,176,178,179,184,186,187,188

%N Numbers with no 1's in base 4 expansion.

%t Select[ Range[ 0, 200 ], (Count[ IntegerDigits[ #, 4 ], 1 ]==0)& ]

%K nonn,base,easy

%O 1,2

%A _Olivier GĂ©rard_

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Last modified January 19 09:28 EST 2020. Contains 331048 sequences. (Running on oeis4.)