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A043957 Numbers n such that 5 and 6 occur juxtaposed in the base 8 representation of n but not of n+1. 0
46, 53, 110, 117, 174, 181, 238, 245, 302, 309, 366, 375, 431, 437, 494, 501, 558, 565, 622, 629, 686, 693, 750, 757, 814, 821, 878, 887, 943, 949, 1006, 1013, 1070, 1077, 1134, 1141, 1198, 1205, 1262, 1269, 1326, 1333, 1390 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..43.

MATHEMATICA

SequencePosition[Table[If[SequenceCount[IntegerDigits[n, 8], {5, 6}]>0 || SequenceCount[IntegerDigits[n, 8], {6, 5}]>0, 1, 0], {n, 1500}], {1, 0}][[All, 1]] (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, May 07 2019 *)

CROSSREFS

Sequence in context: A269671 A039354 A043177 * A336098 A115444 A119385

Adjacent sequences:  A043954 A043955 A043956 * A043958 A043959 A043960

KEYWORD

nonn,base

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified June 24 20:41 EDT 2021. Contains 345425 sequences. (Running on oeis4.)