login
A033011
Every run of digits of n in base 13 has length 2.
2
14, 28, 42, 56, 70, 84, 98, 112, 126, 140, 154, 168, 2366, 2394, 2408, 2422, 2436, 2450, 2464, 2478, 2492, 2506, 2520, 2534, 4732, 4746, 4774, 4788, 4802, 4816, 4830, 4844, 4858, 4872, 4886, 4900, 7098, 7112, 7126, 7154
OFFSET
1,1
COMMENTS
See A043291 and A033001 through A033014 for the analog in other bases. See A033015 through A033029 for the variants with run lengths >= 2. - M. F. Hasler, Feb 02 2014
LINKS
FORMULA
a(n) = 14*A043317(n) (= 14*n for n<13). - M. F. Hasler, Feb 02 2014
MATHEMATICA
Select[Range[8000], Union[Length/@Split[IntegerDigits[#, 13]]]=={2}&] (* Harvey P. Dale, Feb 27 2013 *)
CROSSREFS
Sequence in context: A008596 A033026 A044839 * A321371 A077265 A033847
KEYWORD
nonn,base
STATUS
approved