The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A188199 Base-8 Keith numbers. 1
 8, 11, 15, 16, 22, 24, 32, 37, 40, 48, 56, 59, 92, 123, 200, 251, 257, 400, 457, 893, 2761, 4040, 4547, 8392, 9161, 12833, 16784, 21225, 29617, 127126, 238244, 378733, 526117, 587524, 599333, 672549, 745765, 2176234, 2347267, 2593739, 5285583, 8113400, 341785390, 449415500, 514971408 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Keith numbers are described in A007629. LINKS Table of n, a(n) for n=1..45. EXAMPLE 200 is here because, in base 8, 200 is 310 and applying the Keith iteration to this number produces the numbers 3, 1, 0, 4, 5, 9, 18, 32, 59, 109, 200. MATHEMATICA IsKeith[n_, b_] := Module[{d, s, k}, d = IntegerDigits[n, b]; s = Total[d]; k = 1; While[AppendTo[d, s]; s = 2 s - d[[k]]; s < n, k++]; s == n]; Select[Range[3, 10^5], IsKeith[#, 8]&] CROSSREFS Cf. A007629 (base 10), A162724 (base 2), A187713 (base 5), A188195-A188200. Sequence in context: A101573 A029629 A028394 * A078117 A256073 A032423 Adjacent sequences: A188196 A188197 A188198 * A188200 A188201 A188202 KEYWORD nonn,base AUTHOR T. D. Noe, Mar 24 2011 STATUS approved

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

Last modified April 24 22:16 EDT 2024. Contains 371963 sequences. (Running on oeis4.)