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A043938 Numbers k such that 0 and 7 occur juxtaposed in the base-8 representation of k but not of k+1. 0
56, 71, 120, 135, 184, 199, 248, 263, 312, 327, 376, 391, 440, 455, 504, 519, 575, 583, 632, 647, 696, 711, 760, 775, 824, 839, 888, 903, 952, 967, 1016, 1031, 1087, 1095, 1144, 1159, 1208, 1223, 1272, 1287, 1336, 1351, 1400 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
MATHEMATICA
SequencePosition[Table[If[SequenceCount[IntegerDigits[n, 8], {0, 7}]> 0 || SequenceCount[IntegerDigits[n, 8], {7, 0}]>0, 1, 0], {n, 1500}], {1, 0}][[All, 1]] (* Harvey P. Dale, Oct 31 2021 *)
CROSSREFS
Cf. A007094.
Sequence in context: A050440 A043158 A039335 * A328165 A214250 A286981
KEYWORD
nonn,base
AUTHOR
STATUS
approved

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Last modified April 18 16:22 EDT 2024. Contains 371780 sequences. (Running on oeis4.)