A033004 Every run of digits of n in base 6 has length 2.

7, 14, 21, 28, 35, 252, 266, 273, 280, 287, 504, 511, 525, 532, 539, 756, 763, 770, 784, 791, 1008, 1015, 1022, 1029, 1043, 1260, 1267, 1274, 1281, 1288, 9079, 9086, 9093, 9100, 9107, 9576, 9583, 9597, 9604, 9611, 9828, 9835

Offset

1,1

Comments

See A043291 and A033001 through A033014 for the analog in other bases, A033015 - A033029 for the variants with run lengths >= 2. - M. F. Hasler, Feb 02 2014

Links

Vincenzo Librandi, Table of n, a(n) for n = 1..700

Formula

a(n) = 7*A043310(n) (= 7*n for n<6). - M. F. Hasler, Feb 02 2014

Mathematica

Select[Range[10000], Union[Length/@Split[IntegerDigits[#, 6]]]=={2}&] (* Vincenzo Librandi, Feb 05 2014 *)

Crossrefs

Cf. A033007, A033010.

Sequence in context: A031483 A020334 A044832 * A189931 A164005 A100451

Adjacent sequences: A033001 A033002 A033003 * A033005 A033006 A033007

Keyword

nonn,base

Author

Clark Kimberling

Status

approved