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A033016
Numbers whose base-3 expansion has no run of digits with 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
OFFSET
1,1
LINKS
MATHEMATICA
Select[Range[10000], Min[Length/@Split[IntegerDigits[#, 3]]]>1&] (* Vincenzo Librandi, Feb 05 2014 *)
CROSSREFS
Cf. A007089. Supersequence of A033001.
Sequence in context: A009852 A323951 A080003 * A027008 A114997 A146919
KEYWORD
nonn,base
STATUS
approved