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%I #10 Apr 02 2014 03:26:26
%S 24,49,74,99,104,109,114,119,120,121,122,123,149,174,199,224,229,234,
%T 239,244,245,246,247,248,274,299,324,349,354,359,364,369,370,371,372,
%U 373,399,424,449,474,479,484,489,494,495,496
%N Numbers with exactly 2 4's in base 5 expansion.
%H Vincenzo Librandi, <a href="/A023739/b023739.txt">Table of n, a(n) for n = 1..3000</a>
%t Select[ Range[ 500 ], (Count[ IntegerDigits[ #, 5 ], 4 ]==2)& ]
%K nonn,base,easy
%O 1,1
%A _Olivier Gérard_
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