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A033006
Every run of digits of n in base 8 has length 2.
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
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
KEYWORD
nonn,base
EXTENSIONS
Typo in name corrected by Vincenzo Librandi, Feb 05 2014
STATUS
approved