A033006 Every run of digits of n in base 8 has length 2.

9, 18, 27, 36, 45, 54, 63, 576, 594, 603, 612, 621, 630, 639, 1152, 1161, 1179, 1188, 1197, 1206, 1215, 1728, 1737, 1746, 1764, 1773, 1782, 1791, 2304, 2313, 2322, 2331, 2349, 2358, 2367, 2880, 2889, 2898, 2907, 2916, 2934

Offset

1,1

Comments

See A043291 and A033001 through A033014 for the analog in other bases, A033015 - A033029 for the variants with run lengths >= 2. - M. F. Hasler, Feb 02 2014

Links

Vincenzo Librandi, Table of n, a(n) for n = 1..1400

Formula

a(n) = 9*A043312(n) (= 9*n for n<8). - M. F. Hasler, Feb 02 2014

Mathematica

Select[Range[10000], Union[Length/@Split[IntegerDigits[#, 8]]]=={2}&] (* Vincenzo Librandi, Feb 05 2014 *)

Crossrefs

Sequence in context: A031493 A020336 A044834 * A259727 A118468 A206905

Adjacent sequences: A033003 A033004 A033005 * A033007 A033008 A033009

Keyword

nonn,base

Author

Clark Kimberling

Extensions

Typo in name corrected by Vincenzo Librandi, Feb 05 2014

Status

approved