login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A033021 n-th number k such that every run of digits of k in base 8 has length >=2. 2
9, 18, 27, 36, 45, 54, 63, 73, 146, 219, 292, 365, 438, 511, 576, 585, 594, 603, 612, 621, 630, 639, 1152, 1161, 1170, 1179, 1188, 1197, 1206, 1215, 1728, 1737, 1746, 1755, 1764, 1773, 1782, 1791, 2304, 2313, 2322, 2331, 2340 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 1..1100

MATHEMATICA

Select[Range[10000], Min[Length/@Split[IntegerDigits[#, 8]]]>1&] (* Vincenzo Librandi, Feb 05 2014 *)

CROSSREFS

Sequence in context: A028439 A178896 A217373 * A031493 A020336 A044834

Adjacent sequences:  A033018 A033019 A033020 * A033022 A033023 A033024

KEYWORD

nonn,base

AUTHOR

Clark Kimberling

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 5 17:03 EDT 2020. Contains 333245 sequences. (Running on oeis4.)