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A044156
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Numbers n such that string 2,4 occurs in the base 7 representation of n but not of n-1.
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0
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18, 67, 116, 126, 165, 214, 263, 312, 361, 410, 459, 469, 508, 557, 606, 655, 704, 753, 802, 812, 851, 882, 949, 998, 1047, 1096, 1145, 1155, 1194, 1243, 1292, 1341, 1390, 1439, 1488, 1498, 1537, 1586, 1635, 1684, 1733, 1782
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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], {2, 4}]>0, 1, 0], {n, 1800}], {0, 1}][[;; , 2]] (* Harvey P. Dale, May 01 2023 *)
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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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