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A043945 Numbers k such that 2 and 3 occur juxtaposed in the base-8 representation of k but not of k+1. 0
19, 26, 83, 90, 147, 159, 215, 218, 275, 282, 339, 346, 403, 410, 467, 474, 531, 538, 595, 602, 659, 671, 727, 730, 787, 794, 851, 858, 915, 922, 979, 986, 1043, 1050, 1107, 1114, 1171, 1183, 1279, 1299, 1306, 1363, 1370, 1427 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
MATHEMATICA
SequencePosition[Table[If[SequenceCount[IntegerDigits[n, 8], {2, 3}]>0|| SequenceCount[ IntegerDigits[n, 8], {3, 2}]>0, 1, 0], {n, 1500}], {1, 0}][[All, 1]] (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, Feb 11 2020 *)
CROSSREFS
Cf. A007094.
Sequence in context: A181691 A039342 A043165 * A274685 A152013 A160036
KEYWORD
nonn,base
AUTHOR
STATUS
approved

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Last modified February 29 21:35 EST 2024. Contains 370428 sequences. (Running on oeis4.)