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A033029 Every run of digits of n in base 16 has length greater than or equal to 2. 30
17, 34, 51, 68, 85, 102, 119, 136, 153, 170, 187, 204, 221, 238, 255, 273, 546, 819, 1092, 1365, 1638, 1911, 2184, 2457, 2730, 3003, 3276, 3549, 3822, 4095, 4352, 4369, 4386, 4403, 4420, 4437, 4454, 4471, 4488, 4505, 4522, 4539 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

First term that is not a multiple of 17 (A008599) is 273, which is one more than 272 = 16 * 17. In hexadecimal, 272 is 110, which having a single 0 next to a 1, disqualifies it from this sequence. - Alonso del Arte, Oct 16 2016

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 1..1000

EXAMPLE

255 in hexadecimal is FF, a run of two Fs, hence 255 is in the sequence.

273 in hexadecimal is 111, a run of three 1s, hence 273 is in the sequence.

291 in hexadecimal is 123, three distinct single digits, so 291 is not in the sequence.

MATHEMATICA

Select[Range[10000], Min[Length/@Split[IntegerDigits[#, 16]]] > 1 &] (* Vincenzo Librandi, Feb 05 2014 *)

CROSSREFS

Sequence in context: A044902 A048843 A008599 * A044842 A033014 A070814

Adjacent sequences:  A033026 A033027 A033028 * A033030 A033031 A033032

KEYWORD

nonn,base

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified June 24 03:06 EDT 2017. Contains 288697 sequences.