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A045017
Numbers whose base-4 representation contains no 0's and exactly four 1's.
1
85, 342, 343, 345, 349, 357, 373, 405, 469, 597, 853, 1370, 1371, 1374, 1375, 1382, 1383, 1385, 1389, 1398, 1399, 1401, 1405, 1430, 1431, 1433, 1437, 1445, 1461, 1494, 1495, 1497, 1501, 1509, 1525, 1622, 1623, 1625, 1629
OFFSET
1,1
LINKS
MATHEMATICA
Select[Range[10000], DigitCount[#, 4, 0] == 0 && DigitCount[#, 4, 1] == 4 &] (* Vincenzo Librandi, Sep 21 2016 *)
CROSSREFS
Cf. A007090.
Sequence in context: A183652 A183644 A068559 * A297399 A020212 A251343
KEYWORD
nonn,base
STATUS
approved