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A033016 Numbers n such that every run of digits of n in base 3 has length >=2. 16
4, 8, 13, 26, 36, 40, 44, 72, 76, 80, 108, 117, 121, 125, 134, 216, 229, 234, 238, 242, 324, 328, 332, 351, 360, 364, 368, 377, 396, 400, 404, 648, 652, 656, 684, 688, 692, 702, 715, 720, 724, 728, 972, 976, 980, 985, 998, 1053 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

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

MATHEMATICA

Select[Range[10000], Min[Length/@Split[IntegerDigits[#, 3]]]>1&] (* Vincenzo Librandi, Feb 05 2014 *)

CROSSREFS

Supersequence of A033001.

Sequence in context: A009852 A323951 A080003 * A027008 A114997 A146919

Adjacent sequences:  A033013 A033014 A033015 * A033017 A033018 A033019

KEYWORD

nonn,base

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified December 5 10:45 EST 2019. Contains 329751 sequences. (Running on oeis4.)