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A033014 Every run of digits of n in base 16 has length 2. 28
17, 34, 51, 68, 85, 102, 119, 136, 153, 170, 187, 204, 221, 238, 255, 4352, 4386, 4403, 4420, 4437, 4454, 4471, 4488, 4505, 4522, 4539, 4556, 4573, 4590, 4607, 8704, 8721, 8755, 8772, 8789, 8806, 8823, 8840, 8857, 8874 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 1..2000

FORMULA

a(n) = 17*A043320(n) (= 17n for n<16, cf Example). - M. F. Hasler, Feb 02 2014

EXAMPLE

In base 16, a(1)=17 is written 11; the subsequent 14 values are the multiples of 17, corresponding to 22, 33, 44, ..., FF).

This is followed by a(16) = 4352 = 1100[16], then (still in base 16): 1122, 1133,..., 11FF, 2200, 2211, 2233, etc...

MATHEMATICA

Select[Range[9000], Union[Length/@Split[IntegerDigits[#, 16]]]=={2}&] (* Harvey P. Dale, Jan 19 2013 *)

CROSSREFS

See A033001 for further cross-references.

Sequence in context: A008599 A033029 A044842 * A070814 A188290 A268287

Adjacent sequences:  A033011 A033012 A033013 * A033015 A033016 A033017

KEYWORD

nonn,base

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified November 21 22:40 EST 2019. Contains 329383 sequences. (Running on oeis4.)