A043468 Numbers having four 3's in base 9.

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

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