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A043528 Numbers having four 9's in base 10. 1
9999, 19999, 29999, 39999, 49999, 59999, 69999, 79999, 89999, 90999, 91999, 92999, 93999, 94999, 95999, 96999, 97999, 98999, 99099, 99199, 99299, 99399, 99499, 99599, 99699, 99799, 99899, 99909, 99919, 99929, 99939 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
MATHEMATICA
Select[Range[100000], DigitCount[#, 10, 9]==4&] (* Harvey P. Dale, Aug 22 2011 *)
CROSSREFS
Subsequence of A011539.
Sequence in context: A126978 A188790 A190832 * A089521 A084474 A033422
KEYWORD
nonn,base
AUTHOR
STATUS
approved

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Last modified March 28 05:39 EDT 2024. Contains 371235 sequences. (Running on oeis4.)