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A045106 Numbers whose base-4 representation contains exactly four 1's and one 2. 0
342, 345, 357, 405, 597, 1110, 1113, 1125, 1173, 1302, 1305, 1317, 1350, 1353, 1362, 1368, 1371, 1374, 1377, 1380, 1383, 1389, 1398, 1401, 1413, 1425, 1428, 1431, 1437, 1461, 1494, 1497, 1509, 1557, 1605, 1617, 1620 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
MATHEMATICA
Select[Range[2000], DigitCount[#, 4, 1]==4&&DigitCount[#, 4, 2]==1&] (* Harvey P. Dale, Jan 30 2017 *)
CROSSREFS
Cf. A007090.
Sequence in context: A239271 A204751 A247441 * A137201 A121205 A038852
KEYWORD
nonn,base
AUTHOR
STATUS
approved

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Last modified April 23 03:30 EDT 2024. Contains 371906 sequences. (Running on oeis4.)