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A044426 Numbers n such that string 9,4 occurs in the base 10 representation of n but not of n-1. 0
94, 194, 294, 394, 494, 594, 694, 794, 894, 940, 994, 1094, 1194, 1294, 1394, 1494, 1594, 1694, 1794, 1894, 1940, 1994, 2094, 2194, 2294, 2394, 2494, 2594, 2694, 2794, 2894, 2940, 2994, 3094, 3194, 3294, 3394, 3494, 3594 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
MATHEMATICA
Transpose[SequencePosition[Table[If[SequenceCount[IntegerDigits[n], {9, 4}]>0, 1, 0], {n, 4000}], {0, 1}]][[2]] (* The program uses the SequencePosition and SequenceCount functions from Mathematica version 10 *) (* Harvey P. Dale, Mar 13 2016 *)
CROSSREFS
Sequence in context: A035117 A096755 A050965 * A044807 A304609 A116109
KEYWORD
nonn,base
AUTHOR
STATUS
approved

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Last modified April 17 15:20 EDT 2024. Contains 371764 sequences. (Running on oeis4.)