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A044330 Numbers n such that string 8,7 occurs in the base 9 representation of n but not of n-1. 1
79, 160, 241, 322, 403, 484, 565, 646, 711, 727, 808, 889, 970, 1051, 1132, 1213, 1294, 1375, 1440, 1456, 1537, 1618, 1699, 1780, 1861, 1942, 2023, 2104, 2169, 2185, 2266, 2347, 2428, 2509, 2590, 2671, 2752, 2833, 2898 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
MATHEMATICA
Transpose[SequencePosition[Table[If[SequenceCount[IntegerDigits[n, 9], {8, 7}]>0, 1, 0], {n, 3000}], {0, 1}]][[2]] (* The program uses the SequencePosition and SequenceCount functions from Mathematica version 10 *) (* Harvey P. Dale, Jun 22 2016 *)
CROSSREFS
Sequence in context: A140008 A142159 A046050 * A044711 A362360 A142307
KEYWORD
nonn,base
AUTHOR
STATUS
approved

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Last modified February 20 18:38 EST 2024. Contains 370217 sequences. (Running on oeis4.)