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A043908
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Numbers k such that 3 and 4 occur juxtaposed in the base-6 representation of k but not of k+1.
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0
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22, 27, 58, 63, 94, 99, 130, 137, 167, 171, 202, 207, 238, 243, 274, 279, 310, 315, 346, 353, 383, 387, 418, 423, 454, 459, 490, 495, 526, 531, 562, 569, 599, 603, 634, 639, 670, 675, 706, 711, 742, 747, 778, 785, 827, 850, 855
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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, 6], {3, 4}]>0 || SequenceCount[ IntegerDigits[n, 6], {4, 3}]>0, 1, 0], {n, 1000}], {1, 0}][[All, 1]] (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, Aug 20 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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