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A043943 Numbers k such that 1 and 6 occur juxtaposed in the base-8 representation of k but not of k+1. 0
14, 49, 78, 119, 142, 177, 206, 241, 270, 305, 334, 369, 399, 433, 462, 497, 526, 561, 590, 631, 654, 689, 718, 753, 782, 817, 846, 881, 959, 974, 1009, 1038, 1073, 1102, 1143, 1166, 1201, 1230, 1265, 1294, 1329, 1358, 1393 (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], {1, 6}]>0 || SequenceCount[IntegerDigits[n, 8], {6, 1}]>0, 1, 0], {n, 1400}], {1, 0}][[All, 1]] (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, May 30 2021 *)

CROSSREFS

Cf. A007094.

Sequence in context: A250973 A039340 A043163 * A308834 A084049 A251221

Adjacent sequences: A043940 A043941 A043942 * A043944 A043945 A043946

KEYWORD

nonn,base

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified January 28 10:39 EST 2023. Contains 359859 sequences. (Running on oeis4.)