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A043468 Numbers having four 3's in base 9. 0
2460, 9021, 15582, 19956, 20685, 21414, 21900, 21981, 22062, 22116, 22125, 22134, 22140, 22141, 22142, 22144, 22145, 22146, 22147, 22148, 22152, 22161, 22170, 22179, 22188, 22224, 22305, 22386, 22467, 22548, 22872 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..31.

MATHEMATICA

Select[Range[23000], DigitCount[#, 9, 3]==4&]  (* Harvey P. Dale, Feb 19 2011 *)

CROSSREFS

Cf. A007095.

Sequence in context: A043798 A043814 A043823 * A020431 A236707 A304554

Adjacent sequences:  A043465 A043466 A043467 * A043469 A043470 A043471

KEYWORD

nonn,base

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified September 27 07:56 EDT 2022. Contains 357052 sequences. (Running on oeis4.)