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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 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Table of n, a(n) for n=1..39. 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 Adjacent sequences: A045102 A045103 A045104 * A045106 A045107 A045108 KEYWORD nonn,base AUTHOR Clark Kimberling STATUS approved

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Last modified May 26 14:42 EDT 2024. Contains 372826 sequences. (Running on oeis4.)