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A045130
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Numbers whose base-4 representation contains exactly four 1's and one 3.
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0
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343, 349, 373, 469, 853, 1111, 1117, 1141, 1237, 1303, 1309, 1333, 1351, 1357, 1363, 1371, 1372, 1374, 1383, 1389, 1393, 1396, 1398, 1401, 1431, 1437, 1461, 1477, 1489, 1492, 1494, 1497, 1509, 1623, 1629, 1653, 1749
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,1
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LINKS
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MATHEMATICA
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Select[Range[1800], DigitCount[#, 4, 1]==4&&DigitCount[#, 4, 3]==1&] (* Harvey P. Dale, Dec 17 2021 *)
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CROSSREFS
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KEYWORD
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nonn,base
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AUTHOR
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STATUS
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approved
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