1,1
Select[ Range[ 240 ], (Count[ IntegerDigits[ #, 4 ], 1 ]==2)& ]
Sequence in context: A019401 A098333 A043338 this_sequence A045119 A045095 A061940
Adjacent sequences: A023708 A023709 A023710 this_sequence A023712 A023713 A023714
nonn,base,easy
Olivier Gerard (ogerard(AT)ext.jussieu.fr)
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