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A045105
Numbers whose base-4 representation contains exactly four 1's and no 2's.
0
85, 277, 325, 337, 340, 343, 349, 373, 469, 853, 1045, 1093, 1105, 1108, 1111, 1117, 1141, 1237, 1285, 1297, 1300, 1303, 1309, 1333, 1345, 1348, 1351, 1357, 1360, 1363, 1372, 1375, 1393, 1396, 1399, 1405, 1477, 1489, 1492
OFFSET
1,1
MATHEMATICA
Select[Range[1500], DigitCount[#, 4, 1]==4&&DigitCount[#, 4, 2]==0&] (* Harvey P. Dale, Aug 27 2023 *)
CROSSREFS
Cf. A007090.
Sequence in context: A027524 A043340 A045129 * A038472 A020200 A020298
KEYWORD
nonn,base
STATUS
approved