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A044175
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Numbers n such that string 5,2 occurs in the base 7 representation of n but not of n-1.
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0
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37, 86, 135, 184, 233, 259, 282, 331, 380, 429, 478, 527, 576, 602, 625, 674, 723, 772, 821, 870, 919, 945, 968, 1017, 1066, 1115, 1164, 1213, 1262, 1288, 1311, 1360, 1409, 1458, 1507, 1556, 1605, 1631, 1654, 1703, 1752, 1801
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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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SequencePosition[Table[If[SequenceCount[IntegerDigits[n, 7], {5, 2}]>0, 1, 0], {n, 2000}], {0, 1}][[All, 2]] (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, Sep 17 2019 *)
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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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