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A043907 Numbers n such that 2 and 5 occur juxtaposed in the base 6 representation of n but not of n+1. 0
17, 32, 53, 68, 89, 107, 125, 140, 161, 176, 197, 212, 233, 248, 269, 284, 305, 323, 341, 356, 377, 392, 413, 428, 449, 464, 485, 500, 521, 539, 557, 572, 593, 608, 647, 665, 680, 701, 716, 737, 755, 773, 788, 809, 824, 845, 860 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..47.

MATHEMATICA

SequencePosition[Table[If[SequenceCount[IntegerDigits[n, 6], {2, 5}]>0 || SequenceCount[ IntegerDigits[n, 6], {5, 2}]>0, 1, 0], {n, 900}], {1, 0}][[All, 1]] (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, Sep 23 2019 *)

CROSSREFS

Sequence in context: A058899 A038354 A043127 * A173054 A162624 A029817

Adjacent sequences:  A043904 A043905 A043906 * A043908 A043909 A043910

KEYWORD

nonn,base

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified February 18 09:39 EST 2020. Contains 332011 sequences. (Running on oeis4.)