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A039481 Numbers whose base-11 representation has the same nonzero number of 5's and 9's. 1

%I

%S 64,104,185,225,306,346,427,467,548,588,614,625,636,647,658,680,691,

%T 702,704,705,706,707,708,710,711,712,714,724,790,830,911,951,1032,

%U 1072,1094,1105,1116,1127,1138,1144,1145,1146,1147,1148,1150,1151

%N Numbers whose base-11 representation has the same nonzero number of 5's and 9's.

%H Harvey P. Dale, <a href="/A039481/b039481.txt">Table of n, a(n) for n = 1..1000</a>

%t bQ[n_]:=Module[{dcn=DigitCount[n,11]},dcn[[5]]==dcn[[9]]>0];Select[ Range[ 1200],bQ] (* _Harvey P. Dale_, Oct 15 2011 *)

%K nonn,base,easy

%O 1,1

%A _Olivier GĂ©rard_

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Last modified October 16 01:52 EDT 2021. Contains 348034 sequences. (Running on oeis4.)